Hi DaX

I know it's got to hurt, feel real personal when it's aimed at you
But the way I'm seeing it is that it's not personal, it's not your fault, it's a problem she has.
And let's face it she hasn't even/isn't even willing to open her eyes to actually even seeing/knowing the real you........who you actually are.........she has blinded herself to really recognising and cherishing all your good qualities, your strengths, your achievements..........
And that isn't personal if she doesn't even know/isn't prepared to really know you
That is her problem, not yours.

And there's this distinction out there between biological and not biological but..........maybe for some (not all!!) foster/adoptive parents there may be a distinction.........they may act a bit differently...........but even with that in consideration her behaviours towards you are still wrong on every level........adopted or biological shouldn't come into it, there are no excuses...........it's something in her

So I guess, it's about very clearly and matter-factly (as far as you can) putting your points across to her when she "has an issue", trying not to let her sucker you in or provoke you or hurt you in her responses, and "walking away" when you need to.
As I'm sure you know, sometimes the more you say the more she tries to be hurtful or cruel.........try not to let her problems own you though, you deserve so much more than that

I don't know whether some parts of her will ever change........I mean if she can treat a person (you!!) and that's not even taking into account the responsibility/relationship she has with you (!!) the way she does............then........well I can't see any change soon...........
So..........maybe.........this..........and it doesn't need to be religious:
Grant me the serenity to accept the things I cannot change, the courage to change the things I can, and the wisdom to know the difference.
And I think deep down you know the difference in where she can't change right now
And never forget that some people, like us, will/do see your true value, do care, do want the very best for you

Alison