I agree that dealing with a depressed spouse is hard. Both my husband and I have bipolar disorder, so we have spells of depression.

Is there any way she can see a therapist more frequently?

How long has she been depressed? Is she seeing a psychiatrist very often? It might be that her meds need to be adjusted.

Actually, I suggest you post this concern in the depression forum and/or the relationship forum. Depression is actually not a personality disorder.

Let's see what folks say in those places.