Thanks for the definitions - these are modern expressions for attention seekers. Nobody's ever died of them, so don't worry, she'll grow out of it.
I'm not making any assumptions about your family relationships, you're the one who chose to announce to us all that you and your ex are both in relationships, you moaned about how you "only" get to canoodle at your boyfriend's every other week. Then you slag off your ex. Doesn't exactly sound to me like happy families.
And stop feeling so sorry for yourself. Your kids are the ones I feel sorry for. They've got a father who now has a future wife and neither of them wants his daughter. And their mother's moaning because she only gets to see the boyfriend every other week!
No wonder your 12 year old daughter craves attention. These kids, like any others, did not ask to be born, that was courtesy of you and your ex. One of you had to have custody, in this case it was you, but you seem to be content to let them still visit your ex despite the "abusive and destructive home life" you saw fit to remove them from!
You're wrong, I'm not perfect, but you should take a look in the mirror yourself. Don't go around sympathy seeking for a situation that you are equally to blame for as your ex. It's your kids who should be moaning, not you!
Grow up!