I finally managed to trigger Elsa's quest item. It was the location. I also finally found Lisa in the bike riding area.
I seriously doubt I will still be playing in the 4-6 months it will take for you to actually make V0.18 public. I am sure that the additional 60% reduction in potion costs will be appreciated by those who choose to play.
I also doubt that I will ever get to Area 10 in the game. I have reached the angels level, but haven't tried to go any further. So far, of the three safe zones, the first (cave level 6) is the one I use most of the time. It gives me the best return on my time for both magic drops and monster parts to sell off. I also don't have to worry about taking too much damage while grinding for experience and such.
If you want to earn faster xp, you can also exchange your droplets at the wishstone (1 droplet = 10 xp).
Normally, V0.18 was supposed to be released today and be in public version in 2 months but since Patreon blocked my page for a few months, I will take my time to work properly on it and fix any issues. Unless subscribestar finally activates my page, I've been waiting for 4 months.
If you have arrived at the angels, you must have found the forge and 1 additional alchemy crate.
ps: There is also a magic box in the cave entrance to exchange monster parts for monster hearts.
edit : I think I have made all the corrections I said I would do for V0.18 and I think I found the problem with the sport (avoid doing it alone for the moment, it reactivates the condition that blocks with NPCs). I also added several spy scenes with masturbation for 6 NPCs who didn't have any. I'll be revamping the quests I still have to add for Alison, Elsa, Piper, and Sweetie.