After the Amy Lord case and with Menino a lame dick, BPD officers (most of whom have wives and daughters) have in a number of cases in which I am personally familiar recommended that women carry pepper spray.
I know this does not conform with the groupthink here about all things Boston. Sorry.
Note this also suggests a strenuous physical defense against an assault. This is the same advice given to my daughter when she went to a class conducted by BPD about subway safety for students.
So, did you call the police headquarters and voice your concern that these officers were recommending your daughter commit a felony?