I hope this is the right section for this. I name changed a this will make me really identifiable in real life.

Not sure whether anyone can give me any advise but I simply need a good rant and maybe a bit of a cry and someone to talk to who?s not part of my family.
Sorry if it?s going to be long but I am trying to give as much background as possible.
Basically I have an older sister, who is in her mid thirties. I am in my twenties and still at university but have a long term partner and am really happy with my life in general. I am going to work as a teacher next year and DP and I are making long plans so it?s all going well. And I assume that is the problem.
Her life is not good, her last (D)P is now in prison and she is suffering from several mental health issues. I think some of them are coming from when we were children. Our parents divorced when I was very little but she was in her teens, and of course suffered much more. It also meant she took more responsibility for both of us on, so mum could work. I appreciate it must have been hard for her and have been grateful for this.
However, she always uses this to basically say that I ruined her life.
Our father passed away a few years ago and she was very upset. To be honest there were a lot of issues and I was never close to him, so I got over it easier. Although I was always wary of him and didn?t have my contact he saw me as the golden child and treated me much better than her, aways. This hurt her a lot and she has severe jealousy issues up to today.
In summer 2010 we had a huge fight in which she called me names a lot, said what an egoistic person I am, basically called me a cold nasty bitch and said she wished I had never been born as I ruined everything for her.
This fight was caused by me coming home for a few weeks over summer, and obviously trying to spend some time off with my mum. The jealousy issues with my sister however mean that she cannot stand my mother and me doing stuff by ourselves and feels abandoned, even when she is included. I tried to understand but her behaviour during this fight was so severe and hateful that I had issues to deal with her afterwards.
This was not the first serious discussion we had on these topics and she has ruined several holidays beforehand.
About 6 months later she sent me a letter trying to apologise for her behaviour. However the letter was full of ?buts?, e.g. I wouldn?t have behaved like this BUT you caused it?. So it wasn?t really an apology but I know she is sick and tried to be understanding. She said she didn?t remember anything she said and certainly didn?t mean it. 

I tried to be nice to her over Christmas but she was angry I didn?t discuss our issues with her over Christmas with other family around and said how mean I am to hear all the time, for example because I didn?t look at her at the dinner table (not on purpose on my parts but might have been the case, I don?t know). It just feels so petty to discuss on that level.
Forward a few months and mum and I plan a holiday and try to include my sister. We hoped that some time away might help pour issues and we might get time to bond. [hollow laughter].
We went on a trailer holiday and the weather was awful. So was the mood!

Second day in we needed to go to a nearby town and were stuck in traffic. Sister had a complete freak out with yelling because she couldn?t smoke in the car for the two hours we were stuck. She yelled at me what a mean cow I am, that I am not important and that she doesn?t want to listen to a baby. I say if it?s this important to her she should smoke but that obviously it?s not nice when stuck in a car! She refuses to smoke but keeps yelling and ruining the day for everyone.
We get home and the whole holiday continued like this. Her depressions mean she has insomnia, but she got angry if we didn?t get up at 6am as well etc. Everything needed to be planned around her 4 hour afternoon naps (she got angry if we tried to do something in the afternoon) and her smoking, as she can?t go two hours without. So everything was quite hard. 

She also started again with last years issues, what a bitch and cow I am, stone cold and only interested in my own person. I decided not to go to our father?s funeral for personal reasons and she said how awful I was for that. I asked her back then whether she?d like me to come and support her, but she refused and I decided for myself to not go. 

She said she hates me and would never look at me again if we weren?t sisters. She called me selfish for only coming home during holidays (I can?t due to jobs and studying otherwise). 
She also said she doesn?t have to listen to me as I am not an adult, will always be a baby in her eyes, called me a fly sticking to our mother like she is stinking shit and so on and so on. Basically a repeat of the year before, so much for not meaning it. 

There is just no talking to her. How can I talk to her when she starts to call me names and dismisses everything I say? How can we ever be in the same room if she hates me so deeply and wishes me away every second?
Worst part was that she also attacked mum and said that mum caused all her mental health issues. Our mother is the most supportive person every and is always there for her now adult children. My sister does not manage to keep her household in order and mum actually cleans her kitchen regularly and helps her with everything else. 

Mum is suffering from heart conditions as well as other medical problems and had serious problems over the course of the holiday. The stress my sister caused her was extremely physical. 

I understand that sister is sick and needs help, but she is refusing every form of therapy at the moment.
I am planning on going home over Christmas but I don?t know whether I really should. I know it is causing more issues than it should. Right now my sister is refusing to be in the same room as me. Mum basically wants to cancel Christmas completely, but even that is not good enough for my sister as I would still be in the same house as our mother, whereas she wouldn?t be. I have no other place to stay though and only see my mum and grandma once or twice a year, so don?t want to miss out. But I am not sure how to behave.

I feel much much better when I am not in contact with my sister at all as her constant aggression and hate is detrimental for my own mental health. But obviously as the whole family lives in the same town (but me) it is not really feasible to keep ignoring her.


If it would just be me I would never see her again. I know this makes me sound awful as she is sick but it has been like this for the last ten years and I just can?t handle it anymore. I get worried about spending time with other family members, as she will ruin it. She simply kicks off every time I am there, even if it?s only 2 weeks a year. She yells and swears, even in public.
During this holiday she got so angry and hateful that I didn't feel safe around her anymore. I was actually scared of her doing something to me
, after all her life would be easier if I disappeared, as she has said several times.
And to be honest I am not sure I can forgive her all the things she said. It might sound petty to some but being told repeatedly what a bad person I am in her eyes and how much she hates me has left marks. And her verbal abuse is getting too much.
But my mother is obviously in the middle and I am not sure where to go from here.
Next year DP and I would like to do Christmas at our place but obviously that would mean mum would have to decide whether to see me or my sister.
I just can't carry all of this on anymore.