Give her a minute, she's just lost the majority of her limbs.

Okay, now class. With a pocket full of magical grass blades.

Class proceeds as it always does, but by lunchtime, word of Mariga's magic has spread around most of the school. A few people approach her and ask for demonstrations. 

She can show them her magic grass blades! Requests to see her transform get deferred with "I used all my charge this morning, and also detransforming feels really weird so I'd rather not do it for short periods." She can show the photos of her first attempt, though, if anyone's interested.

People are interested! Mariga isn't the only magical person most of them have met, nor even the only one in the school, but they're rare enough to make her the centre of attention at least for the next few days. 

The magical grass loses its lustre after a while, both metaphorically and literally. The various effects have all worn off by the end of the day, although some lasted longer than others.

Mariga takes detailed notes on what lasted how long, which is good for her charge in the moment and could come in handy later. She also resolves to meet the other magical people in the school, now that she can look at them without burning with envy. Is she at full charge by the end of the school day again?

Not quite, but she's not far off. Close enough to go flying again. 

Unrelatedly, there are quite a few more people hanging around on the practice field than there were yesterday or this morning. 

Mariga doesn't want to go flying again. She wants to hang out in the library until it closes, working on blueprints while in a state where she can test things. Being able to change the properties of materials in a way that doesn't require charge to maintain is a potential game-changer for her robot body, at least if her power can be applied to parts of her magiform. 

She is not interrupted in this endeavour. At least not until the library does, in fact, close for the night. 

That's plenty of time to get a lot of blueprints done, and to test whether she can in fact enchant parts of her own magiform.

If the library closes before she runs out of charge, she can go experiment on the practice field some more! Probably everyone else has long since gone home. 

She doesn't have that much charge. She'll run out after an hour or so of use, even spending most of that time doing magic experiments. On the plus side, it looks like Mariga can enchant parts of her magiform, but it's much costlier than enchanting regular objects. 

Every minute of experiments helps. She hauls herself home in human form, thinking about tradeoffs. If there's no ongoing maintenance cost to enchanting parts of herself, in the long run it can still be worth doing once she reaches escape velocity. But she thinks she can manage a design that works solely with nonmagically possible materials, even if some of them have to be in shapes that would be extremely difficult to nonmagically manufacture. 

The next day she doesn't have any high-priority experiments she needs to do before class, so she flies to school and goes looking for her magical classmates. Not being the only one in the school is nice.

How about that kid over there, just slowing down from a fast-moving orange blur? 

Unlike Mariga, he still looks mostly human, the main exceptions being catlike ears and a matching tail. His swooshy orange cape is definitely not in compliance with the school dress code. 

"Hello!" she says, touching down in front of him. She's a cyborg today, with metal skin and structural members but still full of organs in between. Still, it's progress. "Idona, right?"

"Yep! Uh, I have...no idea who you are. Nice look, though!" 

"Mariga. I'd've been shocked if you'd somehow recognized me. And thanks! Yours is neat too. Do they let you wear the cape in class?"

"I dunno, it's new. Maybe I'll keep it and find out!" Idona zips a few feet to one side and back again, cape billowing behind him when he stops.

"Man, I felt so proud of this form before I saw you this morning. You just put my whole look to shame—I mean, blue robot dragon centaur? How did you even come up with that?" 

"I miiiight have been fantasizing about magic for the past several years." Self-deprecating chuckle. "I just kept wanting more limbs! And you should totally be proud of your look, it's classy."

Dramatic gasp. "Really? Oh no!" 

Idona looks down at his outfit as though seeing it with new eyes, making a show of being horrified as he twists and turns to try and see it all at once.

"That's not what I was going for at all! I'll have to start over again!" 

Mariga cracks up.

Idona grins and starts making silly changes to his form—extending his nose to a ridiculous length for a second, then turning his ears into cabbages and back, and so on. 

More giggles! Mariga will reciprocate with a brief period of rainbow zebra stripes.

Idona runs out of charge and drops out of magiform just as it's getting to be time to head to class. The biggest difference, other than the cat ears, is that his regular clothes are shades of grey, green and blue instead of orange and red. 

"Oops. Guess I'll test the cloak against the dress code another day." He doesn't seem too bothered.

"...aaaand I'm gonna be late for class now I don't have superspeed. Nice meeting you!" 

"Nice meeting you too!" Mariga doesn't have super speed either, so she had better book it. Once she's back to being iridescent blue everywhere instead of a glorious Lisa Frank eyesore.

Mariga still has plenty of charge left when she gets to class, but the teacher frowns when she ducks through the door. 

"I don't know which of my students you are," he says, "but if you want to be a part of this class, you're going to have to pick a shape that can sit at a desk."

"Pero Mariga, and at some point I'm going to look like this full-time, but by then I'll have looked into desk options more. Or I can just stand at one of the ones in the back row?" Standing indefinitely is actually pretty comfortable, with all these legs to share the weight.