Fixer, you are an adorable man and a loving parent. It seems from what I have read that you are busy parenting your wife. Consider 'supporting' her less as she drags you and your little daughter toward bankruptcy or at least unreasonable debt.
She is taking cruel advantage of your love and good intentions. Or so it seems... your little daughter is watching you and trying hard to warn you.
Consider positioning yourself for full custody. Is that possible? If you re-invented and rescued yourself and your daughter, I am quite sure that your bratty wife would get wilder and wilder for awhile, but then she would flame out and reconsider her life choices. Or keep self destructing.
She does have a drinking problem, right? If you call it a Party Problem it sounds less destructive, but it is the same. It still costs your daughter her security.
I assume you are 30 something and talented. Get brave and help your family by telling your wife the facts of life... she does not get to trade kisses for enabling. Or hugs. She does not even kiss, right?