Who's This? DC's Squirrel Girl (not really).
How you could have heard of her: While more prominent than the second Cheetah (see you next week), she's been eclipsed pretty much for good by the Minerva version. In fact, in the New52, "Priscilla Rich" is merely an alias of Minerva's. Where people will remember her from is the Challenge of the Super-Friends cartoon, where she was a member of the Legion of Doom.
Example story: Sensation Comics #22 (October 1943) "The Secret Submarine" by William Moulton Marston and Harry G. Peter
I bet it offers better treatment than Arkham Asylum. More humane anyway. As to whether it's more efficacious, I don't know. Cheetah does show her claws again.
Who's Next? Her ferocious replacement.