I have seen this before. Either it was done incorrectly or your friend could have a medical issue. I had a friend who was tired all the time so she went to get acupuncture. She ended up with the same bruises. I urged her to go to the doctor and it turns out she was tired because she was anemic, which is why she bruised so easily. That doesn't mean that is what is going on in this case, but I wouldn't take chances.