I think it all depends on the size of the hemangioma and what's going on with it. My friend's daughter had more than 15 laser treatments. My daughter had only one and may choose to have one more when she gets older. I'm not sure where you live, but my daughter had her treatment through Childrens Hospital in Boston. Her doctor was experienced and did a fabulous job. My daughter's laser was done when she was 6 years old and it was more of a touch up at the end of her hemangioma journey...it was very successful. I could show you pictures if you want. But if your daughter is in a different stage, the pictures might not be as helpful because it's a different situation.
Good luck with everything!