Several other people asked questions while Edie listened. Mara had a question about being unable to find her magic, and Philip was asking why he could seem to locate his magic, but not use it. Ginny answered both of them with, basically, advice to stay calm and keep trying.
Edie wondered if Mara even had magic, if she was unable to find it. Surely not everyone had magic available to them at all. Hadn’t Ginny said something along those lines? Maybe Edie was just remembering something that Corrie and Dawn had passed on from Professor Lal.