Tattoos have become very popular in this generation. Tattoos are an art form and expression of who you are. She is an adult and she can do whatever she wants to her body. If she wants to put a big tattoo on her forehead, she can go right ahead. So you don't like tattoos, the next guy she meets may find tattoos extremely sexy. I used to work in a plastic surgery clinic and you'd be surprised how many women get breast implants because their bf or hubby liked big boobs...after a break up or divorce they come back to get the implants removed because they never really wanted it in the first place. Or the amount of women who would come in wanting work done but not wanting their husbands to know because their husbands didn't want them to alter their appearance. In the end of it all, if you really want something because it will make yourself feel more complete (tattoos in this case) then just get it done. Life is too short.