That's still off. Ending 1 can be reached earlier than 0 mental, endings 4&5 don't care about orgasmhalf of these seem a bit off to me:
ending 1: reduce mental to 0
ending 4: aroused state (gripping sheets, legs up), low orgasm
ending 5: aroused state, high orgasm
Basically, ending depends on which facial expression/pose she has as time runs out. There are 2 below initial, you get them by lowering mental, and 2 above initial, you get them by increasing mental. That's all.