[ Singles & Dating ] Open Question : My girlfriend is getting a tattoo and idk if I should be worried?

Ok so I love her and I've known she's wanted a tattoo of a rose to represent her mom that passed away. I like that just I see two problems here. One we're juniors in Highschool I think she has time to get it but she's all for it now and her family is even friends with the guy who will give her it. Also I'm afraid since she hates needles and isn't good with pain. I keep having this fear that she's going to move from the pain and he's going to stab her with the ink giving her blood poisoning. I'm fine with the tattoo just how and when is what worries me. I'd feel better if she did it when she comes back here before school starts because I know how to treat her just in case, but I'm afraid she's going to get hurt. I talked about this with her already. Also the guy is going to do it in his basement since it's illegal where she is. That just makes me feel soooooooo much better. What should I do? I'll love her either way with the tattoo and she keeps saying I'm worrying too much about how she's getting it and she's kind of sad cause she's thinking that I just don't want her to get it. It's going to be a rose on her ankle. Like the size of a silver dollar. I really like the idea. I never met her mom, but from how my girlfriend is I can tell she was a nice lady. A long with that tattoo can be funny whenever I massage her feet haha.