Maybe I'm slow, but I think this game is too hard, the time limit is too strict for me. Idk why but the night keeps ending before the timer in the top left is up and I don't have time to really do anything past unbuttoning her shirt.
Check your stamina/battery in the top right corner, if your stamina during the day is low when you start the night, then your camera battery will be low as well, if it drains out completely - the night ends
Try running some more as this permangently increases mcs stamina