it's official, DSD2 aged 14 wants to move in with us full time. She had a row with Mum, wanted to stay with us for a couple more nights, but she is now saying she doesn't want to go back except for every other weekend and wants to stay with us the majority of the time.
Meanwhile, the ex wife who has witheld contact between DP and his 2 youngest kids for months now, declaring abuse from DP towards them, trying to get police and social services involved and getting us a fair way down the court proceedings route has suddenly decided that we can start to have contact again and go back to exactly as it was. She has made herself look a complete idiot, she was even making the kids go to the next town as she didn't want DP in her town picking up and dropping off the eldest kids, now all of a sudden, we're allowed to her house again. No co-incidence that DSD2 has been refusing to see Mum and she is panicking and thinks by allowing DP contact with the others, we won't play the same game as her, and stop DSD2 from seeing her.
My head is all over the place. DSD2 is very different from the 3 other children and I get on with her much better, I can see similarities between myself and her but the reality is I don't know if I can deal with bringing up someone elses child full time. What if I get attached and then she clears off back to Mum? can I really "share" my time between DS and DSD as well as working full time and living in the back of beyond? I'm going to find it hard enough during the week and then the weekend will be filled with the 2/3 other children and their arrogant, rude behaviour. The thought of the whole situation is filling me with dread and fear. I think the weekends with the other kids is more frightening though than DSD being there all the time. At least I have some opportunity to treat DSD as I do DS and she is much better mannered and behaved than the other 3 anyway.
It makes me really upset to think of losing my evenings with DS, those special times of watching a film or teaching him a new skill when DP goes out, I feel I will lose this time at worst, or now have to share with DSD and I'm not sure, I want to, which in turn makes me feel terribly guilty.
To add to the mix, DP ex is going mental and wanting to wait for DSD outside school, constant texting (which DSD has apparently, all but one time ignored), DSD has said the more Mum tries to push her, the less time she wants to spend with her. 
DSD Mum and maternal grandmother have expressed concern about DSD2 state of mind, they have said they think she might have an eating disorder and might be experiencing hallucinations based on diary comments they have found, but no hard proof. I have seen no evidence of this, although, obviously I haven't been looking for it, but will do now. My gut feeling is that they are wrong and trying to find justification for DSD not wanting to live with Mum anymore rather than Mum look at her own behaviour.
Ironically since the counselling session last week and since this has all kicked off, DP has been saying that I am always right in my opinions and views and that he sometimes just takes some time to see it. I've been pretty blunt with him about his other kids and he has told me he doesn't really want DSD here all the time as he enjoys our time together and the fact that he gets a rest (he will spend an average of an hour per evening driving DSD about now). He's told me he knows his eldest is rude and disrespectful and that his youngest is an attention seeker. He's saying he wants DSD to have the same chores as DS etc but I know he really has no idea how to enforce consequences etc., so unless he's going to start listening to me, it's a disaster waiting to happen.
Also, this is DP busy time of year and he will be working 15 hour days, it means that we only had his children for every other weekend contact and one night in the week, we didn't do the 50/50 as it is supposed to be in the rest of the school holidays, this meant that I really looked forward to the summer and saved up my holiday time from work to spend days with DS and now I have to accept that I have to share that with DSD and I'm not sure I want to. Then I feel sick with guilt. Then I think how nice it will be to have a "ready made" family of 1 boy, 1 girl. Then I remember how much influence the ex has in our home and don't believe that will change.
I feel like a puppet in a show and everyone else is allowed to pull my strings. DP and his ex have created the whole situation and yet it is me who has to deal with it. By allowing one child to cut contact with his father, she has taught DSD2 that she can cut contact with her Mother too. "We reap what we sow" as they say.