While I don't doubt she has some sort of mental illness it really doesn't sound like schizophrenia---the voices are kind of an important part of that, and if you don't have them you pretty much need to have delusions---those are the defining features the rest just comes along with.

As far as walking away from family---my dad is an alcoholic and I distanced myself for several years because of that so yes....but he drinks far more responsibly around me now so while we don't really talk much there is some reconciliation.