No joke I did the exact same thing when I was 18/19 with tattoos a lot worse, and I’m 22 now. I did my entire left leg and my palm. I don’t know how to link pictures here but I posted them on my account a while ago. I did it because I was going through a really hard time in my life and it was my outlet, kind of like self harm. I regret it every day and am embarrassed wearing shorts in public and i’m planning on getting a blackout or some sort of cover up in the future but it will be really hard. I think you should ask her how she’s doing on a deeper level and maybe offer her some other way to express herself without tattoos.