yeah exactly and remember jenny was just a rework so they didn't have to do everything new plus they only had to focus on one character and they had a couple weeks more time.
To be fair, we don't know yet how long the testing phase for 0.19 actually will be.
I think part of the long bugfixing phase for Jenny was in fact due to the reworking of old code (especially the dexterity system) and the ensuing fixing of all the connected things broken because of it.
With Eve (and Grace and Odette) most content is completely new and therefore should be a lot more stable if built correctly from the start. The only real overlap of Eve with existing content is in some of the teacher's quests and since Dogeek was involved in 0.15 the code should be more stable and therefore less likely to break other things or itself when changed.
Wasn't one promise of the code rework faster future updates? I wouldn't mind seeing a new trend where after the art is finished the rest quickly follows. As long as the game doesn't lose quality because of it.