If I understood you correctly, you want to give Yuna both the green tea and suspicious lotion just before the night starts and she refuses to get these? If so then you have to wait few more days as with the new update she's more aware if you left any stains on the previous night.
As for the wakefulness (sleep alertness), what wrote you trying to do to her that her wakefulness rose quickly? My guess you tired to have sex with her, if so then remember to make HER cum first with hands and then do sex, also headboard help reduce wakefulness.
Hope this helps, cheers