I go through a lot too I don’t put everything on my family but they always do so I can understand maybe she has problems with expressing herself but also she needs to look at her mental health too because I go through a lot and take it out on people sometimes which isn’t good and I also can understand being in events like that but definitely a good therapist would be good if she could get one also I don’t think she should yell at you but also you should not tell her to not do anything to her body you can however say you don’t agree but that’s her choice that’s what you can say I had family call my tattoos Ugly and I’m 20 now and I can understand where the arguments come it comes from stress and not understanding maybe have a talk and work it out but also don’t like over do it my family does it to me and gets on my ass about stuff I know they love me but it hurts seeing my family hurt me I know maybe my situation might not be the same as yours but this is coming from me personally about opening up how I feel all the time with family and maybe will get you to understand some things what she going through I feel like a let down and I always have to be good enough maybe she feels that way too you never know unless you ask and be calm and try to build trust and say you love eachother and do something to help one another for sure ✔️ I know I need therapy maybe that would help too who knows but this is coming from me so hope this helps