Sounds like you need a long discussion as to why she felt the best thing was a wheelchair. Perhaps fear was the initial issue. That may take some time to gain her confidence and I would perhaps introduce a session on what her condition is, set some measures to assess it in realtime so she can see if she is being symptomatic from a physical standpoint. If you look to some of the causes and then address those on a small scale with a medium term goal. It does make me think of treadmill unweighted walking in a suspension harness. Have you access to one? She can't fall in that and she can exercise in safety.

---------- Post added at 08:41 AM ---------- Previous post was at 08:38 AM ----------

p.s. a score of 2/9 is not very hypermobile. I score more than that The Beighton modification of the Carter and Wilkinson Scoring System - The Hypermobility Syndrome Association