Seal is lucky to have you! It's easy to blame yourself, but try to still this little beast! I understand, I second guess everything that doesn't go right! I was thinking, looking at the video, you could fashion a sling for her to hold her up and let her wiggle and move her legs, touching them to a nonslick surface to give her exercise and mobility time. If you are able, I would hold her, say, when you are decompressing for the day, and gently massage her legs, moving them, kind of like mini-chick physical therapy!