Glad you found us! Anyone with breast health concerns is welcome here!
Sorry you are going through this scare right now. I am not familiar with the literature on this topic, but I am not sure that breast enhancement surgery would contribute to breast cancer....it may interfere with the ability to read a mammogram, combined with her young age (younger women have more trouble getting a good read from a mammogram due to breast density). That does not mean she should put off an evaluation though! At her age, odds are in her favor. They say that 80% of breast lumps are benign....Good chance hers is nothing too, but any lump should be checked out thoroughly. THey can use an ultrasound to get a better look. Encourage her to see a doctor and not to delay, but try not to create anxiety. Just because she is seeming to be calm, she might be secretly scared and just needs your support.
Hang in there and keep us posted!