About 1.5 years after my surgery, my incision was sore, felt like a bad rugburn to the area, it eventually became red and started to drain. I actually had a titanium screw work its way out of my incision! I had to have skull surgery, I had an infection in the metal hardware they had placed during my initial surgery. They removed all of the metal plates and screws and I received IV antibiotics for a month. I have a small indentation about the size of a ping pong ball at the incision site. They did not replace the metal due to a chance of another infection. The bumps she feels may be pieces of the metal and "cement" they used breaking down, I guess everything was broken down in my head when they opened me up. I guess it is not that uncommon. The surgery was really quite easy to recover from. My biggest concern was when I could dye my hair again : ) I barely had any pain after the repair. Just my thoughts. Good luck to her, she is lucky to have such a caring and helpful family : )