I lost all of my hair as well. I finished Chemo in May, and my hair is now growing back in, probably almost an inch now.
I would suggest she go to her local American Cancer Society office (before she loses her hair if possible) and see about getting a free wig. They also have a free program called "Look Good, Feel Better" that will give her free makeup and show you how to fill in eyebrows and do your makeup, and even tie scarves and wear hats! It is a great program.
As for her legs swelling, I would make sure her doctor knows. Mine did swell as well, and my ankles still do. She needs to keep her feet up. Mine don't swell nearly as much as they used to. After surgery I wound up in the hospital for 13 days. They were giving me some kind of pill like a water pill because I was retaining so much fluid, especially in the legs.
I hope this helped, and I hope your friend is feeling better. She has a long road ahead of her and she will need you!