That is not soon enough.
"Why do I have to wait?" inquires Bella critically.
"Because there's a lot more things that can go wrong, in a lot more ways, then anything else you might want to do. The more time you have to practice, the safer it is."
Which Vivian she supposes she was, but is definitely unrelated.
"Well, but how much actual practicing to do a spell? Making it my birthday is dumb."
She may regret being less specific a few weeks later, when she is curled up in bed happily asleep.
"Mommy," she says. "I dropped my nice pen and it's under the sofa and I can't see it. Can I try the light spell please very very careful to find it?"
"Hmmmm?" Vivian mumbles. Light? Light. She wants a light spell? Okay, she can cast it when she wakes up. "Okay, love, light spell. I'm just- sleep a bit more-" and she nods back off.
She goes back downstairs. She gets out the magic book with the light spell. She traces the runes very carefully onto a new sheet of unlined paper, in exactly the right order, and responsibly checks all of her lines for gaps and wobbles, and then counts the runes and makes sure she didn't miss any. Finding no mistakes, she peers at the incantation.
Mommy usually casts in Cantonese, because she's spoken both English and Mandarin long enough to have them count as her native language. Isabella's only native language for these purposes is English, but she has been taught Mandarin for the last couple of years in anticipation of later casting in that - Mommy's Mandarin is still better than her Cantonese, so it's easier to teach, and the incantations she uses won't need to be re-composed for Mandarin use, because the writing's just the same. Recently (since getting her pendant) she has even met Mommy's parents and spoken Mandarin with them. They are not particularly friendly (Isabella does not really understand what their problem is) but they made fine language practice.
She can't recognize many characters yet. But there's a Pinyin rendering in the book and she can read that. She reads it over a few times to make sure she isn't going to fumble a tone or one of those tricky X initials.
And then she gets down on the floor near where she lost her pen and holds her scroll and recites, firmly and clearly, her incantation, while concentrating on what she wants it to aim at.
She gets a little bauble of heatless light. She stretches a paw under the couch, and gets her pen. The light will wink out on its own when its duration expires. Mommy will be very proud of her, she is sure. She writes about her success.
Two hours later, Vivian is actually awake and comes downstairs. "Isabella, love, where did you want that light spell?"
"Oh, I already did it," says Isabella. "Under the couch. I think it's still there."
"Yeah. You said okay, and I needed my pen. I was very careful and I did it right!"
Vivian's brain is full of a lot of retroactively terrified exclamation marks. Obviously nothing went wrong, Isabella is here, Isabella is visibly whole, but her child just did unsupervised magic and sheeeee's just going to be hyperventilating over here for a while. Give her a minute.
"You were asleep. I'm sorry I woke you up," says Isabella. "Are you okay?"
"I- didn't realize you were casting the spell," Vivian squeaks. "I am very, very glad you are okay!"
And a loud internal voice screaming you are a terrible mother how could you let this happen but mentioning this will not help anyone.
"...you can continue to cast the light spell, as long as I'm there to double check them. One month and then we'll add new spells."
"Okay. Do you want to see my scroll? I'll show you my scroll." Isabella turns back a page in her notebook; she taped her first-ever scroll into it. "See?"
"You did a very good job, love. I'm proud of you." Sphinxette gets a hug for her trouble. (Vivian clings slightly longer than necessary.)
"I could show you how I pronounce it now," she suggests, "and make some scrolls ahead of time, so you could check them all at once, and then I wouldn't have to wake you up."
"No casting without me there," Vivian says firmly. "Even if you have to wake me up. It was fine this time, I'm very glad it was fine this time, but you are still only six and if you are going to cast magic I am going to supervise. I'm happy to check your work whenever you'd like, though."
"What will it help?" wonders Isabella. "You can check the scrolls ahead of time, and if I start saying something wrong then if you stop me I'll swallow the rest of the incantation, that's bad." Isabella knows about swallowing incantations. And that it is bad.