You are effectively punishing people for actually improving their characters in a certain way according to their playstyle. There's not even a stat check to avoid it, you just get hosed because you actually got more powerful than before. Disingenuous to the extreme. A check to throw her off (makes sense considering that you just kicked her stuffing AND you are stronger than her), avoid her (agility?) or simply not get manhandled (endurance?) would also make sense.
I enjoy role reversal, when it's consistent and/or according to certain factors that are evident (approaching a poisonous enemy and getting bitten etc.). This is not one of the cases. Also, you seem to have the impression that I'm actually against the event itself. I'm not, it's the execution that it's an utter mess. I still stand by my 'retarded' statement.