Her sleeping is nothing to really worry about. Adult hedgehogs sleep for 18+ hours a day, and babies sleep even more. As for the wheel, it took my hedgehog, Theodore about a week to even realize his wheel exsisted, and you’ll know once they discover it, as it will be covered with poop (you can clean it using baby wipes). As for the sleeping hedgehogs are nocturnal animals and it can feel like they sleep 24/7. It’s great that you bonded right away, and I’m sure she just likes her sleep. She’s a growing girl and needs lots of sleep.