"She oughta be ashamed," mutters the lady.

The bus reaches her stop before Margaret's.

Has she considered that maybe Margaret oughta be ashamed for bad-mouthing her mother like that? Ugh.

Margaret gets off the bus, walks the last little way to the clinic, and lets herself in (her mother had, of course, locked up as always). She slips into the section where the overnight patients are kept, a room full of kennels with unhealthy cats and dogs sleeping on fluffy blankets, and starts checking charts for something old with a physical injury.

Here's a ten year old Schnauzer who got hit by a car.

She slips a diagram copy into the kennel, mentally runs over her incantation a few times with "chien" as the species, and recites it.

The dog doesn't wake up and it's kind of dark but he looks improved.

Her first enchantment spell should be to make something glow; that sounds pretty simple and safe. In the meantime she can work by the status lights on the equipment. Her backpack is filled with meticulously stamped papers; she has enough for two more casts on the schnauzer, and for three on every other cat or dog with a physical injury.

Most of them are sick but this one's recovering from a complicated spay, this one has been declawed, this one tore an ear in a fight, and this one had an eye removed.

She goes one at a time through the injured ones before looking over the sick ones. She includes the ones with parts missing, though she'll stop at one casting on those if the first one either does the whole job or doesn't seem to do anything. Used-up diagrams go in a different backpack pocket.

The one without an eye still doesn't have an eye after one casting. Hopefully the spayed one still doesn't have ovaries, but that's harder to check.

Suddenly regrowing ovaries would probably have woken it up. The various healers' websites said they could help a bit with infections; she swaps out "malady" for "injury" in the incantation and goes over the sick ones with a couple casts each. 

One of the dogs has woken up, more likely on account of all the French chanting than anything else, and is nosing through the bars at her. It is not actively coughing, which might mean it has been healed!

She lets it sniff her hand a bit.

She still has a couple diagrams left; she'll give poor old hit-by-a-car one more dose, then make sure she hasn't left any papers lying anywhere and that everything is still where she found it and clears out, locking back up behind her.

No one bothers her on the bus ride home.

The next day she's an exhausted mess at school and retains barely anything from classes. She keeps herself quasi-functional by imagining her mother discovering how much better some of her patients are doing.

Well, the healing doesn't spontaneously undo itself or anything, so her mother will find the results of the work the next day, quite inexplicable rates of recovery in all the patients.

The confused-but-happy look on her face at the dinner table that night is a joy to behold.

Margaret doesn't dare do any magic in this state and goes to bed shortly after dinner. The following Saturday she hits the Avalon library again, and checks whether the runecasting textbook is still there or if someone has checked it out again.

It's still there.

Is her note still in it?

Yup.

Odd that the person who kept renewing it until she put a hold on it hasn't snatched it up again. Is there anything in the magic section she hasn't read yet? Now might be a good time to circle back to that book on enchanting, see if it isn't more comprehensible with a grasp of the fundamentals under her belt.

The enchanting book is still there. There's also a book about advanced medallion use.

Ooh, neat! She hadn't realized there was more to medallion use than taking fullform and various midforms. She checks out both of those.

The enchanting book says there are three basic ways to enchant: you can enchant an area, in which case your diagram should take up the whole of that area. You can enchant an object, in which case you may either (a) diagram on the object, or (b) lay the object on the diagram while you cast if you need more oomph than can physically fit on the object. You don't wanna enchant a person and this book will not discuss that.

The medallion book discusses the ways medallions hide and alter objects on one's person (especially clothes), ways to affect one's weight disproportionately to how many parts one adds if one's other form is denser or lighter, subtle midform adjustments, why using medallions to heal yourself doesn't really work and how close you can get by not having an injured part, and things like that.

Those are both very cool. She hasn't had much opportunity to mess around with clothes or anything, since she can basically only transform in her bedroom. Ooh, there's a question, does transforming while under an invisibility spell leave you still invisible? There might be something on that in her notes on the invisibility diagram if the medallion book doesn't have it.

Neither source specifies!