Are you still with this slut?
Only advice I can give you has already been said. Break her down emotionally and financially. If you not sharing then you and her job her only income. She gon have to move out so all her money gon be tied into gettin a new place and without that allowance she gon be broke as shyt. If she desperate she'll come crawling back and it's up to you at that point on how to deal with her.
Don't hit her either cuz when bytches do shyt like this they just
irl. You gon be worse off than she is if you kick her out.