You can't tell squat from 15 seconds of video.
If you want to know what she is really capable of you need to go back to the physical therapy assessments and the assessments of the Physical Rehabilation Physicians , prior to her confinment in the hospice.
Michael is the only one that has control over those records.
You sure as hell can, if what is on the video is claimed to be a "vegetable", and then laughs.