User blog comment:Hidden Scorpius XI/My impressions on "Two Steps Forward, Two Steps Back" (V4-E9)/@comment-25396609-20170108201229

Yang adapting to the new arm so fast... Ironwood DID have his top people working on it, probably specifically engineered to be as natural as possible for her in order to minimize the adjustment period (which is a thing people who design prosthetics are working on in the real world, mind.)

Definitely not a mary sue thing if you think about it.