Since Aziraphale didn't know much about medicine, or how one was supposed to treat dehydration and lack of food, he comforted himself with the knowledge that the clinic staff were very competent and knew what to do for Lana.

"Were there any, er...any indications of who might have done this? Do you know if anyone else was involved?"

While he spoke, he opened up the thermos and poured out a cup of tea, holding it out for Lana to take.