I regularly ride my friend's cob, Max for her (usually once a week) as she can't ride as much as she would like due to work, and she is quite a nervous rider. Today we were about to set off in canter in the far corner, just as the pump went off, spooking him. Max bucked in fright, and I went flying over his head ( no real injuries other than a bruised shoulder and a slightly sprained wrist). AIBU to not tell Cath about the incident, so that she won't worry?