Honestly believing that the hot shower was mankind's best invention, she was a bit disappointed to hear that there wasn't one, but she didn't show any of that. That would be rude- especially after he's been so hospitable to her. Nodding in understanding, she went to work grabbing a robe and slipping into the bathroom. 

There she proceeded to scrub herself clean,relax, soak, rinse, dry and slip on the robe. When she was done, she put her clothes into the wash and looked for, and eventually finding, the stash of blood. She prepared it like how she had seen him do it but quietly drank it out of a coffee cup, muttering something about a chalice with some amusement. 

Since he was so absorbed in his research, we can all assume that time will slip by unnoticed by the young hunter. But however oblivious he may be to the happenings around him, it might slip into his mind that there was something in that room that shouldn't be there. 

Elizabeth has sunken into an armchair or couch (whichever one is actually there but armchair is preferred if it's available XD) and was sleep...and the odd thing that wasn't supposed to be there, was the sound of a person breathing while they were asleep.