Do you feel, that as she comes through her depression, she would be able to start networking and finding ways to establish a new support system, for times, like these, in the future?

Starting over, in a new place, is difficult. It does take time and energy to create new friends, acquaintances, people to call, text, go for luncheons with, even shopping. I want to say, it took me a while, to get to a point, with making my own friends, where I live now. But it's important, to not rely on just one person. Hope she's able to create this type of support network, for herself, when she's ready. Your post makes it seem like she needs to be around others, to lift her spirits.

I can be both. Craving solitude, or knowing when I need to get out of the home and be with other adults.

Hope the two of you, can reach a point, of being able to work through your depressions, at the same time.