Human males and females are dimorphic. Not just in terms of shape (though vive that!), but in size.
A gun in the purse, the glove compartment, or the dresser drawer is the most plausible of solving this.
A funny YouTube movie, sent by a reader. The description (I'm not making this up, check it yourself) is:
Hello, well...Me, kristen, and a big ass white guy named Munger go at it in locker boxing form.
Give Kristen even a small caliber handgun, and this would go a lot better.
Does make me wonder: not all "big ass white guys" are "named Munger." But it appears that most Mungers are big ass white guys.