i'm coming in a little late to the discussion
i would document all that i know and saw.
and i would contact my insurer with questions. does this sound like stirring up trouble?
the reason i say this is is because, let's say the woman has no insurance. who will pay for the treatment bills? if she does have insurance, won't her insurer ask 'where were you and how did this happen' and then try to recover monies from your insurer? i believe that is how it works, regardless of whether or not she believes fault lies with you or your place. just my two cents.
hope it all works out okay. but this is WHY we have to pay for that insurance..
