Hi DaX15,

I am so sorry about the way she's behaving towards you, it must be really hurtful
But when she's seeming to get satisfaction...........just keep reminding yourself.........that she doesn't even know the half of it does she!?!?
If she had any true idea or understanding of what you must have felt/experienced at the time then she wouldn't be using it so much as a joke.
And I don't know whether you'd feel able to, or could give her a "reality check" on how you really felt/feel or not.........maybe something to think about..........but remember she isn't laughing at the real situation because she doesn't get the real situation.
And whether you can or can't wake her up to it..............it's OK, that's her problem if she continues..........there will be people on here who do get it, who do genuinely care about what you've been through and are going through and who are here for you

Alison