On the subject of Fountain and Growing up in a (para)human household:
She'll probably be kept out of Kindergarten style classes until she gets socialized a bit. Fountain would be something of a wild child, having all the instinctual knowledge to survive in the wild. As a wyrmling, she's already scarily intelligent, just not experienced. So learning the societal norms will be important, but Fountain will learn quickly. Reading and writing will be interesting. Also, speaking English. Fortunately, Fountain already speaks pidgin Draconic which Amy can klind of understand.
Tongues (which is in Amy's capabilitities) is a kind of cheat, but may be necessary to get a few basic things learned.
Some speculation has been made on who will take care of the dragon side of things - you have Kurya and Sonngrad, Naichi (who is likely to spoil the wyrmling - "So Cute!"), Crystrani (who has a day job as a teacher), and her adopted mother, Amy. With Vicky halping, of course. She'll be unable to do any spell casting until she's 16. Learning for that can come from any of the dragons (but maybe not Dennis or Hlal). By that point, she'll be (as a dragon) about half the size of Carol's SUV, or the same size as Hunts-The-Ice (roughly the mass of a Welsh Pony). Her human form will probably look teenaged at that point. And like most teenagers, will find high school
boring, unless she's of the rare mentality that learning new things is
fun.
Since I'm using 3.5e for dragons, Fountain already has the alternate form (3/day) ability. She's already been shown as becoming a rat to get into her hideyhole in the dungeon she called home.
The biggest problem I see is Carol, but not so much of a problem she'd be at the start of the story. She'll have a doozy of a therapy session that week (and for several weeks after). I suspect it will take some adjustment from both the wild child and the lawyer, but I doubt the house is going to spontaenous disassemble itself in a cloud of ice and light.
Mark will be like "I think Amy's got quite a story for us. I'd like to hear it." Vicky's opinion is already well known "And here Mom thought I'd be the teenaged mother!" Hunts-The-Ice would be croggled when Fountain asks "Are you my daddy?"
Fountain in Kindergarten will probably be a little on the rough and tumble side, given that she's stronger than most adult humans, and probably smarter. But then, Kindergarten is less about education and more about socialization, and making friends.
And then there's the whole Superhero thing. Since New Wave is all about open superheroing, Fountain will probably be openly known as a dragon. And then Mama Bear Lawyer Carol comes out when people start bothering her granddaughter. Fountain's classmates will probably be "We have the coolest kindergarten class EVAR!" The teacher, Ms. Keane, would be like "She's well behaved, and doesn't cause trouble, but doesn't take bullying at all. She's more likely to punch someone than claw or bite though."
And then there's Amy. "Why me?" And then proceeds to attend the Parent Teacher conferences. As Helbrede. "Hello, Ms. Keane. Is there any problems I should know about?"
"And that's the way it is." -- Walter Cronkite