Ex girlfriend advice....?

My ex girlfriend is going through a tough time in her life. We still communicate because were trying to remain friends, or were both that lonely. Im wondering how supportive i should be of her. If im one of her only friends that remains in contact i feel like i should do something to cheer her up whether it be talking, going somewhere, or idk. Problem is im still in love with her and it has been extremely hard to ignore those feelings since she ended it. I dont know what i should do. I care about her that it bothers me she is depressed, but i feel as if ill never get over her at this rate. I dont want to turn my back on her. Im confused. Opinions?