Granny it is NOT your fault in anyway, shape or form. My Sis in law , didn't take Mick into the Dr when he was little with a broken arm because Mick wasn't complaining (play ground accident) Things just happen.
I realize a broken arm is not as serious but I don't think the guilt that all parents feel is much different, irregardless of the severity. YOU DO THE BEST you can with the information and resources you have at the time.
