Trying different meds could help. Is she getting any therapy? Meds are not enough by themselves - in order to get better and stay better the underlying psychological factors really need to be addressed. I think it's great that she has your support and that you are looking for ways to help her. Having someone care makes a huge difference.
I love your signature, and have copied it down into the notebook I keep for things like that.

It struck a chord with me, since one of my issues has been whether I had any right to even exist.
<font color=orange>"They accused us of suppressing freedom of expression. This was a lie and we could not let them publish it." ... from the Director of Censorship...
</font color=orange>
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“We should always pray for help, but we should always listen for inspiration and impression to proceed in ways different from those we may have thought of.”
– John H. Groberg