Found this YouTube channel called Female Killers.
Portrays stories of just how nutz women can be on the inside while looking totally normal on the outside. They can kill at anytime.
Anyone doing OTC would benefit from watching a few of these videos as to not become too complacent. For reals.
In general though women don't kill for fun or the thrill. Female killers are almost always crimes of passion (husband/lover) or sometimes for profit.