She wouldn't be erasing memories of Legato, to clarify, just asking the emotional baggage to be pushed away. She isn't leaving memories from home behind because they're important to her, as her parents are people she valued deeply and she doesn't want to push that away.

I have gotten crit for putting Rin in stressful situations! However, since then, other than babysitting Legato (which was draining and irritating for her but not dangerous or something that caused her emotional agony), I don't think she's been in any dangerous or dramatic situations? I've avoided putting her on the hot seat in any plots and will be in the future. She's moving back into the castle and back in with Galadriel, quietly. At this point I'm planning to just let her lead the quiet life. Other than taking care of Legato I don't think she's been under any huge stresses.

Moving on from that, I don't know. Rin has been in game for over for years now which is a significant chunk of time even not on the rp front. Maybe what she needs is a reset or partial reset.