Can you please give me some advice?? I regret what I did?

I'm sorry, but she's thinking only of herself...NOT you. She has low self-esteem as well as other emotional issues. You did the right thing. The 2nd right thing is to lose her. She'll be nothing but trouble, and you don't sound like the type of person who deserves to be treated this way, abusively, weirdly, and, well, she's whacked and there's nothing you can do about it. This is one situation you're best off backing away from, and finding a stable and normal girl instead of this (uh, sorry--) mess.