Hopefully everything went well with the surgery, it can be a scary thing to go through for anyone. With luck she'll be back in a few weeks and feeling better then ever.
As to the nudity thing, I think, as odd as this will sound, that she would be fine showing quite a bit more then she is. Madden isn't exactly shy and by now she's really comfortable in front of the camera. But the people that run the site are married to the idea of "at most a brief microsecond flash" from the models. Left to her own devices I don't think she'd bat an eye at showing a lot more.