Acedia held the back of William's head, while he slept soundly with his head buried in her chest.
He didn't do anything to her aside from kissing her lips, and suckling her breast while drinking her blood.
The two of them had an unwritten understanding with each other, that—although the two of them wanted more—this was not the right time to do it.
In truth, Acedia used a bit of her Divinity to allow William to sleep peacefully because she sensed that the latter hadn't gotten any good sleep as of late. Her Sin was the Sin of Sloth, so she could immediately tell if someone was slacking or not.
For the most part, the Half-Elf had been too busy to even sleep properly, and this concerned her greatly.
William might look fine on the surface, but deep inside, he was nearing his limit. This was why Acedia didn't hesitate to forcefully make the Half-Elf sleep after he finished drinking her blood.