You're probably better off starting with a fresh plant... If she does survive, the time it will take her to recover from the shock of the injury will be long enough that you could have another very healthy plant...
These things grow fast enough...
Sorry to hear that though... I'm so fucking cautious with my cat. She's a sneaky little fucker, and would easily level my ladies given the chance to get close to them... I got her very own little pot of catnip just to keep her away from mine. So far so good...