“Well, Angel, that was the last patient for the day, I think.” She looked down at the white bunny at her hooves. “Now, how about we go make some carrot stew?” 

Context: Uh... she just finished treating the last patient of the day. Just what is says on the tin!

“W-We had just finished with t-t-the last patient when A—Angel f-fell down and started screaming. He... He c-changed and attacked me. Oh, I know he didn’t m-m-mean to! It must have been... h-her...” 

Context: Angel Bunny was transformed into a massive, hulking monster. Fluttershy is telling Twilight what happened after she stopped Agent Bentgrass from killing the monster.

“Poor Angel feels just awful about what happened. t wasn’t his fault, though! That evil pony was controlling him! He said it was like a voice shouting in his head, forcing him to do terrible things.” 

Context: In the final chapter, Angel Bunny's mind has returned and he is no longer being controlled... but he's still a giant, hulking monster. Fluttershy is trying to convince the girls that he's no longer a threat.