Unfortunately, this is true.No you can't afford to give it to her. Not for your sanity anyway.
Remember the word vampire in this. She keeps rising from the dead to suck more out of you.
This will be my final say. If you do This, then quite simply you are acting stupidly. Allowing your feelings and hormones to get in the way of logic and common sense.
In other words like a child or a teenager. That's what they do. Not adults.
Good luck.
Move on + stop being a chump.