3 potential assailants against a .32 - probably a revolver. Good thing she intercepted them before entering or she may have been in some trouble.
A shotgun would be better. A pistol & AR-15 are both good for
home defense. I think the shotgun has a slight lead.
A .32cal can do it; lifted me off the ground and dropped me, back in ‘74, in a robbery. I walked away from it, though, through the Grace of God.