I totally understand this behaviour OP, it is called deflection - your plight at whatever which time, takes the attention of off any crap going on in her own life.

She sounds insecure, so in order to make herself feel better, she feeds off the drama you're going through at any which time.

Or at least that's how you have painted her - do you think you are representing her fairly or in a true way? If so, then I'd say - different life stages, great she was there for you when you needed it but that doesn't mean that you're indebted to her, nor does it mean you'll be friends forever.

Friendships wax and wane, I have to be honest I feel so disillusioned with so many different aspects of my own friendships, and I have had to accept that some just aren't what they were once upon a time, but regardless I'm thankful to have had them.

Sometimes you have to let friendships go, it's a sad reality but it can be cathartic.

Sounds like she is insecure and helping you makes her feel better about herself. It's understandable but not a genuine friendship for you. Have you tried talking to her about It, if you want your friendship to continue?

I dont really have much advice, but having been through a similar thing, i dont think you are wrong to cool the friendship. I have been so much happier since I made the decision to only put energy into relationships that were genuinely caring and somewhat equal (obviously there is always give and take). People who tske pleasure in our discomfort are very draining and i know my friend sho was like that brought out the worst in me. Personally i just stopped putting energy into the friendship amd let it drift naturally. It seemed easier snd more pleasant and means we are still on amicable terms, just no longer close.

Just read your second post, perhaps you are misreading the situation? Perhaps it was very emotionally draining and she is wary to get too overinvolved but still values your friendship - have you, or are you too needy?

Yanbu.
I really doubt she has changed, she is just not so good at hiding it.
As time goes on behaviours become more fixed, more habitual, and people use more shortcuts to getting their 'fix' so underlying motives become more apparent.

It doesn’t sound as though you are getting anything positive from this relationship, and clearly it doesn’t make you feel as if the friend cares. You can either phase out slowly, by not making any arrangements to meet and letting her contact you first, so that she is the one making all the running; or you can say when she next contacts that it seems now you are both different people and so much has changed, that you don’t feel that you get along any more and that you don’t want her to feel obligated to continue.

It’s perfectly possible for friends to outgrow each other and you have the additional difficulty of her wanting to sabotage your happiness. To be honest, I would avoid her calls and respond briefly to texts that you are busy/already have something on/away etc if she wants to meet or go out. Hopefully she will get the message. You owe it to yourself to not allow her to undermine your mental health.

Op do you ever ask her why she delights in your downfalls in life?..what does she say?

isn’t it part of basic human nature to want good for others?

No it isn't, civilised behaviour has to be learned and practiced. If it was instinctive, we wouldn't need religion or government to proscribe against harmful behaviour. Most people are actually pretty selfish and seek to satisfy their desires.

Your friend has repeatedly tried to contact you, even though you have backed off. She isnt thinking about anyone else at this point.
She needs to go through intensive therapy, and you wont be doing her any favours if you slip back into old behaviour patterns. Change is possible but it doesn't just happen; it takes sustained effort.

Some people are great friends when they are in the supporting/counselling/mentoring role, but really don't like it when things are going well for you and that role is not necessary. Being supportive when you're struggling allows them to feel needed and higher in status, whereas when things are more evenly balanced, they feel threatened and want to put you down and re-establish what they consider the normal power balance. If that's what's going on here, then maybe she feels vulnerable after admitting weakness/that she's struggling, and wants to feel more powerful by lashing out at you and trying to make you feel small.

I've found that some people look for friendships they can treat as a project or people that they see as fixer-uppers if you see what I mean. They like to swoop in and fix whatever problem they think you have - whether you agree or not sometimes - and they have no interest in you as an individual, just as something to be fixed. It makes them feel better about themselves.

I'm not sure if that's what's going on here but if it is, the only solution I've found is to move on. They'll find a new project soon enough and you will find friends who aren't invested in you being in a bad place.

You know, I read a very interesting article quite recently, and it said that if you are there for someone and see them through a really tough episode, dependant on what other times you have shared, length of friendship, etc, ya da, ya da, ya that they build up an association with you - it's in their sub conscious so there's not much you can do about it - but it made me think.

I'll help anyone, and have helped many friends through tough times, but I also love a laugh and a good time - the ones I've shared a mixed bag of experiences with remain my closest friends, and coincidentally I have known them the longest. Others seem to flake, funnily enough, they are the ones I have supported through some really god awful times, but I'm pleased I was able to help them.

Similarly, I have a friend whom I'd not known terribly long, who leaned on me very heavily, the friendship became very needy, and all consuming and I just could not commit the time and energy that it needed, we are still friends but the friendship is on a different level now.

I think that perhaps you either let the friendship run its course, or you start balancing out the range of emotions and times that you share.

The other posters on here have made some excellent points too, hope that if helps you in some way OP.

Try to find a copy of 'I'm OK, your OK', it's a really interesting book and will help you understand your friends behavior.

Can you give some examples of events and situations? Your posts almost completely your own analysis of this situation and therefore it is impossible to say if you are overreacting, underreacting or whatever, as we don't actually know what is going on.