Wow, I hope she is feeling better soon. It seems like open season on ribs, these days - I cracked one this week. There are of course things she could have done to get back on the roadway safely after leaving it. We've seen threads here on that subject. I don't know what kind of scooter you were describing, but the use of such a scooter that weaves back and forth is dangerous in a group ride because you can't tell where it's headed.
Best wishes for her speedy recovery.
-soma5