Everytime you take a decision that influence her corruption she a +3 or +5 added to her internal counter, the NTR path and the Overlord path will see a lot of those
I'd guess you play on Android, can't imagine the controllers being user friendly considering the castle has a point-and-click interface and the explore map looks like a rough ttrpg from 10+ years ago, it is best experience in a monitor but each work with what we have available
The game does continues after Raeve, around 68 ingame weeks of gameplay/story at the time based on my experience so far. It is uncertain if the game ever gets to an end tho, devs are relatively active on Patron and Subscribestar but if the game has been in development for a decade they could be milking subscribers and taking things slow or plain stalling on purpose, and unfortunately is not unusual to have games in this genre being abandoned so there is that possibility. Personally, I'm just taking the game for what it is, loving the story and the world these characters live in, but I found the game less than a month ago so I still hopefully optimistic that we'll get to see an ending