Arwen giggled a little at that last statement, though inside she was shocked. But either way she was going to drink it in front of him. With what was left of the medicine, she gulped it down, knowing it might be the most nasty tasting medicine she had even had. She showed the Doctor the cup to show him that it was empty. "Ta dah!" She grinned a little before she started feeling a little tired. Jack was starting to as well. But he went to the bathroom to clean out the bucket real quick before going to lay down with his Time Lord. 
While Harkness was cleaning the bucket, Arwen rubbed her eyes and began wondering as to where she was gong to sleep. Owen was sleeping on the couch and there were no other beds. Looking to the Doctor, she rubbed her eyes again. "Doctor? Can I sleep with you and Jack tonight? Owen has the couch..." She asked tiredly.