Have we seen any proof that the weapon used was a Bushmaster?
How many single women buy Bushmasters for self defense?
As for the Bushmaster, I suspect he ‘liked’ the weapon from it being in video games and perhaps that influenced his mom in purchasing it. Anything is possible.
A minority, to be sure, but some do. A Bushmaster is actually a very easy weapon for women to shoot. The stock can be adjusted for size and there's very little recoil. Plenty of women in the military have qualified on M4 carbines.
There's chicks who dig assault weapons just like there's chicks who dig Harleys, off-road 4x4s and loud electric guitars. Just not many of them.