Good first version and I really like the art style. Keep up the good work.
One thing that bothered me though, is that there is no tangible reward after you beat her. You mentioned a bugfix making pussy/ass slave and torture bag available, so that might take care of the slave option. I know it's additional work, but I think it'd be nice to have an extra CG as reward for each of all two/three possible endings that aren't rewrites of obtainable CGs from fighting/loosing. Since the fight with her takes a long time and you can't save before deciding the route, not having any "special" reward when trying other things can feel a bit demotivating, especially in a first demo, that is over after you beat her.
Speaking of the fight, while it was one of the more fun fights I've had in games and replayed it quite a lot, I think the fight needs to be slightly rebalanced/optimized, as it can drag on for quite a long time, while potentially screwing you over in RNG. My personal detailled analysis, hope the volume isn't too annoying: