okay two things really stand out with me, and that's both the ~aura~ reading (since Aura is a literal power in RWBY verse and I think discussing the topic might be a good sort of way to help trigger those memories / abilities for Yang's regains) and also just having a buddy that can do the one meaningful exercise a one-armed girl can do, which is run for hours and hours, they'd be able to bond over stuff like that... especially if Yang happens to be on her prescription meds at the time. /cough

also: high-five for being barefoot. playing like five pedals on her drum kit to make up for her missing hand means she's got some pretty tough feet. if they share like, a foot masseuse or something I think that and the running could both be interesting ways to meet or have met in the past? (MAYBE A PAST LIFE OOOH I don't know how far Nepeta would run with that sort of thing but there you have it.)