Well, I would go with the airplane oxygen mask example on this one. You can only help others after you have taken care of yourself, so please do take care of yourself in this matter. If she chooses to become homeless, that is also her choice, or the consequence of her actions or inaction. Why are you taking this on? You don't have to answer that, you already have, partially, because she asked. But it feels like (and I may be putting myself in your shoes here) you're afraid to tell her no and afraid of what will happen to her if you don't take care of this, AND you're already in too deep, so now how do you get out? Sigh - this is why I still have recurring nightmares about my exes, now gone (from my life, anyway) over 30 years! Good luck with this, you obviously have a kind heart.