i DO play the online version- I was able to take Kate to dungeon at 35 corrupt and 80+trust.Hey, we are aware of that bug you, online version has been updated with a fix, if you don't want to play on online version type that command in browser console:
Code:SugarCube.State.variables.kate.slave=0
But no enslave scene, and message was as stated.
After reaching 51 corrupt and 93 trust, still cannot enslave Kate.