Crookshanks is not going anywhere. He can watch over the infirmary, and stay close to Adia at the same time.

And the time caring for those injured take a few hours. But with Adia's knowledge, everyone gets the care that they need.

It is close to nightfall when Harry and Hermione return to the infirmary. They both look like they were through a long, worn-out battle, but are finally able to rest.