Sure, the chick on the left is taking steroids. No doubt about it. But, here's the deal, If I knew it was a female, I would pound the rib cage. And, if I could get a few good kidney punches in, I'd slam that area That bitch wouldn't leave that ring without several broken ribs, and she'd be pissing blood out of whatever doc-mutilated tube she's got under those shorts.
Having said that, just because its a girl doesn't mean it can't fight. Better fight her like a man!!! Still, it helps to know the weak areas.