On the one hand, magic exists.
On the other hand, ow.
On the first hand, perfect healing.
On the second hand, ow.
On the first hand, flight.
On the second hand, holy fucking ow that one's definitely the worst, yep, ow ow ow.
"You know you didn't really need to try that one, right, I don't even like that one."
"If you think I'm letting a little pain stop me," Edie says, rolling her eyes.
"Not really, but I'm not sure why you want to. I'm the one who's interested in getting really good at making little tchotchkes."
"It could be important one day, and I don't want to be caught off-guard. Besides, flying."
"Flying's pretty great." The black and white rose is only too much when it's going on and coming off, and that doesn't take that long (and she doesn't have to do anything to make it keep happening once it's going, or she might not be able to, but whatever).
So she's supposed to be able to conjure stuff like this, right? (Ow ow ow.) So...does she just concentrate...like this? (She envisions a glass marble, focusing on the image in her mind and poking at what feels like the magic in her head.)
Oh, that is so cool. Can she do something more complicated? A chess knight?
Yes, that seems like a good thing to try.
If she tries the chess knight again, will it be easier?
Can she conjure things in specific places? She tries the marble again, focusing on her desk halfway across the room.
Oh, good. Can she conjure objects inside things? She focuses on the interior of her pillow and focuses on the marble again.
She practices with more complex objects until she can't focus well around the pain any more and then she pulls the flower out and screams into her pillow and then she lies there crying for a little while, because ow.
Practicing healing isn't easy, since neither of them are inclined to self-injury in ways not involving flowers, but she can brush a hand over her sister's forehead if it looks like she'll be crying long enough for a dehydration headache.
And she puts on her own black flower (ow, but she can handle it better) and practices her own conjurations. She started sooner, focuses better around pain, and is more invested in the results--she can already do things significantly more complicated than a chess knight. She conjures a piece of sapphire in the shape of a rose, and concentrates on making it last.
However, she might eventually notice that there's a moment just before the object leaves the magic and enters reality where its eventual lifespan is perceptible. And if she holds it there and fiddles with it, she can make it last longer (or shorter) once it's out. The rotation that lengthens the span makes the object more 'slippery', harder to hold onto and maneuver, and also puts it under increasing tension: if she loses her grip it'll unwind rapidly back down to a short-lifespan state. If she's particularly unlucky or managed to wind it particularly far, it might even spin all the way down to a lifespan of zero and disappear before she can grab it again.
Tricky. But she has time to practice, and frankly, this is easier than learning to draw. If she varies the characteristics of the object, will that affect how difficult it is to hold onto?
If she works at it, she can get a simple object to last for a whole hour, maybe even two. The secret of permanency is not yet obvious.
Once she gets it up to an hour she works on getting progressively more complex objects to last that long.
And by this point it is time to get to bed. She evaluates her current pain level, determines that she can probably get to sleep like this, and doesn't bother taking out either of the flowers she's wearing for the night. In the morning she dresses in clothes calculated to hide the flowers, takes shameless advantage of the grace bonus her pink rose gives her in her art class, socializes with her sister and various acquaintances--
and shuts herself in their room again for more practice. This is the most interesting thing to happen to her for ages.
She doesn't really want to peel the black rose out of her system yet, and really, it's the one that seems to get the most good out of active practice. Twist twist twist how much more duration can she squeeze out of a glass marble before she goes back to scaling to greater complexity.