I expect a guy that age knows how to ride a bike. My parents are a decade older and still ride. I worry, and I'm not sure how sharp their skills still are, but I won't blame a girl that doesn't see them. I do. Motorcycles are out only half the year and they are much smaller visual targets for the eye. I really leave it to the riders, my aged parents included, to understand these things. The largest motorcycle (my dad rides a 1500 Nomad) is 1/3 the mass of the smallest car. My dad rides too fast, I think, but he loves his bike. I really do think he would rather die in a crash than whatever other thing will take a man his age. Yep! We've just accepted this and I will be on-hand with a snow shovel to scoop up his remains when the time comes. Your a good Son!
A motorcycle in a world where a motorcycle isn't common is a dangerous ride. I go about 8 months a year without seeing them and then the little things start squirting out into traffic. I really can't fault a young person for not taking them into account. Jail em!
I do pray for a speedy recovery, however. Just to keep the gallows in storage for the girl. No doubt but that she is traumatized. Let's hope so...she'd be a sorry excuse for a human ifn she wasn't.