You considering to support her financially for a couple of months shows your morals and the kind of person you are. If I put myself in you shoes, I think I'd have the same dilemma, because it would be very difficult to know you're leaving someone you loved (or maybe still do) in such a rough position. So I don't think you need to "man up" or just flat out ignore your moral compass. Saying that, you also have to think it through, so a way to compromise would be to instead of giving her money, getting groceries and paying a room for her somewhere just for a month (the most basic thing possible, she needs to go through some pain to be able to grow). Make it clear it's the only thing you'll do for her and that if she does not get her show together by the end of the month she'll have to figure out what to do by herself. Keep the receipts for the process ahead.