I think it was probably just an accident. One of those things, as they say. The question in my mind would be would another rider likely have gone down in the same circumstances - I think quite possibly yes. I'm really wondering whether his disability has anything at all to do with the wreck. It seems his disability wouldn't really be related. I think, if anyone, she would be angry at Dad since Dad was "chaperoning" him on the ride (not that it sounds like he needs it...). I think it would be inappropriate for you to have informed others. And no, I don't think she would be justified.
CA
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