Depression Supporters Support Group
This community is dedicated to spouses, children, relatives, co-workers and others who are actively supporting someone suffering from depression or other serious mental illness. Depression can bring about intense sadness, melancholia or despair that has advanced to the point of being disruptive, which can have a grave impact on the ability of others trying to help.
Does she have anyone close by to support her? Her fiancé, her kids, her ex, her parents? I don't really know what to say, from the way you describe it she's reacting to how her world was completely flipped and just when it was getting better it got worse.... It's really such a horrible situation with what sounds like so many individual factors. Maybe just finding balance and a place where she belongs again can help her (along with her therapy and medications).
Just remember you aren't alone