more than cuts,those marks look to me like she has tried to scratch herself.Looks more like scratch bruising than cuts.But I surely think she has made that herself.If someone else would have done this,the marks would not have this direction.But yeah,those could even be cuts.I used to have a cutter friend,and yes,initially she covered her cuts.But when she started to feel really bad,she start to "forgot" her wristband.Maybe she really need help.