The aunt sounds like the better option out of all the choices you have ... As far as her having devolped a reputation as "the mental one" ... Often the ones in dysfunctional families that get labeled as the defective ones are the healthiest ones of the whole darn bunch even if they are a bit nutty ... I'd give it a go ... The worst that can happen is it doesn't work out, the best that can happen is you end up with an ally for life ...

You might even consider taking a non-stressful part-time job to help contribute towards the rent so y'all don't get booted out ... I know that can be difficult, though, when the storms of our mental health issues are raging against us ... !!!

Good Luck & Best Wishes,
Pfrog!