One of my best friends is also a brest cancer survivor - she had it two times, ten years apart, and beat it both times.
After her second surgery, and there was something else going on, too, becaue they did a hysterectomy, too. After that, she was really feeling like "less of a woman," with no female parts left, and worried that her husband would never want to look at her scarred body again.
So, for a present after her second masectomy, I went to the naughty girl's store and bought her some pretty lingerie.
Another thing, she used me as her "guinea pig." After she was pretty well all healed up, we were in her bedroom doing something, and all of a sudden she dropped her blouse to the floor and stood naked in front of me. What she was doing was, trying to get an honest reaction from me, to see if people would think her body was horrible and maimed. Well, I didn't think she looked bad at all. In fact, you could hardly tell anything had been done! Well, she was pleased with that, and she decided that if I hadn't run screaming from the room, she must not look too bad, and that gave her courage to eventually undress in front of her husband.
My point is, if your friend has surgery, even something minor, she may need reassuring that she is still beautiful, and that reassurance may require a little more than simply spoken words.