[X] Everyone should probably get food and sleep, de-rat Amy tomorrow. Sleepy casters and hungry vampires are a bad mix for spells. Amy will have to do her run on the wheel for one more night.
--[X] This was an important learning lesson. Magic is powerful, and useful, and dangerous. You are a bureaucracy now. Have someone start working on magic safety instructions, and on setting up your department of magical affairs.
--[X] Ensure her privacy - no males in the room when she transforms into a likely naked human form. Maybe Giles if he can argue the absolute necessity, but definitely no boys.
[x] De-rat Amy now before anything else goes wrong. It'll only take another half-hour or so, and who knows how crazy she's going as a rat? And if she's listening to all this somehow she might be devastated by an unnecessary delay.
-[X] Prepare some clothes and food for Amy. Also sedatives in case she comes out of the de-ratting procedure in an altered state of mind (ie deranged), and medics, in case she needs immediate medical attention, or attacks people on sight.
-[X] Talk to Amy as if she can understand everything, and explain that the delay is to ensure everyone's safety, including hers. Before, during and after deratting.