all i know is that when i was super low in life, and i mean low. some of what helped me was other people being around, comedy, lots of comedy, its pretty hard to feel down when youre laughing your head off, and goals, any kind of goals, although i would stay away from the type of goals that are easy to fail at as that is just going to reinforce any negative views. fixation on the self that is hurting isn't going to do much good, just remind her you don't have to believe everything you think. but cognitive dissidence can be a good thing, just remember the mind cant think two different things at once, thats why the comedy helps, and the goals help, your mind is fixated on funny not sad, a better future not the dreary past etc.
สัพเพ สัตตา สุขีตา โหนตุ
the mountain may be heavy in and of itself, but if you're not trying to carry it it's not heavy to you- Ajaan Suwat