Mr. Christian,
It is not only the money issue, dancing is addictive, there are so many things involved, things you think you know but you do not, you never will be in her shoes. I am telling you this so you do not over look it. Her dancing will be an addiction that needs to be broken as well.
The drugs and drinking is another addictition. I was trying to point out there are many things going on in her situation. There is nothing cut and dry about it.
From what you wrote She has people to pick up the pieces, she does not have to think, deal, accept anything.
She will do what she will do and nothing you will/can do change that. Please look out for yourself. I know it hurts and it is hard. You are not alone.
We are here for you.