I agree with your decision with doing version 0.14.1 instead of version 0.15. It is better to polish everything before moving on the next Act. Regarding whether to train/enslave Wilona by MC or not, I think it is better for MC to train/enslave Wilona. After all, Wilona has to be sexually punished for her crime.
Honestly I actually respect that kind of approach because honestly i'm pretty tired of Dev's suddenly needing to do a "remake" or complete Content Rehaul because there was some stuff that either didn't make sense, didn't flow right, or just got so outdated with new content that it eats at them so much that they decide they have to redo it all just to make the new content not make the old stuff look so bleh. Keep it polished as can be now so that you don't gotta worry about any hidden time bombs down the road