There is a way to get willpower back you can find in the second week. The issue you're talking about without real control came about because I ran into a big problem. I was trying to tell a coherent story but also had started the game off as a sandbox. The problem was it became very, very difficult to keep track of what a player might do or who they might meet so I tried to make things a bit less sandboxy eventually because of it.
The sequel will be in Ren'py and will be a more straightforward branching visual novel. I'll have important moments occur regardless but give choices for things like sex scenes and stuff like that to compromise.
Awesome that you will Turn to Renpy! It is the most convenient engine to follow a Story imho.
I was really sorry to read about what you had to go through. 20 years ago I lost my 1st wife to cancer. Huge respect for the weight you shouldered.
I very much hope you can Dive into development now and take your mind off things.
My question would be about roughly how far into the story are you already? 1/3, a half, something like that?
Very much looking forward to the next updates.
Get Well and cheers to you!!!