The Physics of Magic

"What the heck!" Said the boy who looked like Kayden.
"No kidding!" Exclaimed other Alice.
Original Alice started ever so slowly backing up, while original Kayden continued to gape, until Lily spoke.
"Wow, you look just like these two! Are you magic? Are you in Alice and Kayden costumes? Are you from another dimension? Am I going to appear? Do they make Alice and Kayden costumes? Do you have candy you can give me? Alice doesn't like to give me candy often. Neither does Mommy. Daddy sometimes gets me ice cream, but only sometimes. I like ice cream, especially chocolate. It's yummy."
It's strange when a five year old is able to capture the attention of four teens, but by the end of Lily's little speech, all of them just blinked at her.
"What?" She asked.
Time Skip Two Hours
"Yeah that makes sense."
"No, it really doesn't."
Lily was inside, playing with her toys and probably greatly confusing her mother with mumblings about how they should start making Lily costumes. Alice, Alice, Kayden, and Kayden were discussing what happened.

Ok guys, so I have no clue how to realistically write the following conversation, so I decided I'd just give you a short summary and maybe take suggestions on how to write this out.
So they start calling the other Alice and Kayden Ali and Kay to be less confusing, and with a lot of talking they eventually figure out that somebody in Alice and Kayden's universe most have created magic, which breaks the laws of physics by pulling magic over from another universe, but it also pulled over Ali, Kay, Thomas, and Thomas' parents. And that it will continue pulling things over until it rips all these universes apart. The only way to stop it is to destroy the object.
So yeah, you'll probably get more frequent updates from here now that I'm past that really hard part.