AWE! *Sorry about your friend, but I'm sure with a friend like you she is a *FIGHTER* right?
Seriously though, I was very moved by you post!
Here's a suggestion, maybe have someone make some collages with pictures od breasts and womens faces and maybe incorporate some words to along with the theme.. I dunno. Maybe words like "Fighter" "Strength" "Strong" "Surviour" etc
You could even have paper maches boobs glued down onto your surface and collaged/painted,etc!
Good luck!!! Let us know how it's going ok?
*God Bless you and your friend*