Several reports have her talking about it to some other employees before she left. As for the delay, have you ever know anyone who has been raped? I have. One of them (whose rapist was one of my friends that ADMITTED to me he raped her) never filed a police report, despite all of us encouraging her to do so. Another waited almost 2 days, and almost had to be dragged down to the police station by her best friend (my girlfriend at the time). Both were bona fide rapes (the first was admitted to by the perp; the second had witnesses, as it happened in the back room of a party), and yet both women were in such shock and denial that they didn't want to do anything to remind them of what happened. People don't always react as we would expect them to after a trauma like that.
A long list of studies (my own personal experiences notwithstand) have demonstrated that women often try to wish the experience away, and only after their attempts to ignore it don't work will they seek other remedies.
BTW, do you have anything derrogatory to say about either of the women I know who have been raped? Do you want to question their "mental state" or "trustworthiness" because they didn't report the rapes right away? If so, Freepmail me, so we can meet and do it face-to-face...