Lets see, 15 little bitches coming at/attacking me... 15 rounds (plus one in the tube) for my .45... At least one spare mag available too... I'd wager, you put one into the pavement inches in front of the first one's foot and they'll turn tail and run like little bitches.
Personally, I don't care what age and gender they are. You attack me, I defend with whatever I need to until the threat is neutralized. Be that firearm, 2x4, steel pipe, cobblestone, etc. Put some fear back into the kiddies... They'll live longer.
Certainly a valid approach to defending oneself in the face of risk of sever injury or death. Most of us here are not macho man and like it or not will not win in a fist fight against 15 women.