The most you can really do is remind yuek that you're there for them and listen, not much else. They need to remain strong and you need to help them remain that way

It looks amazing

Im sorry that ur friend is going thru hard times and that it has had that kind of affect on u. My heart goes out to her and u ❤️

Welp I could say I have the same issue sometimes but with my classmates,
Hope you don't feel too bad about it, sos orry you u and yo friend.