Look, I love Gravity Falls as much as the next adult Gen-Z-er, but you guys have to stop calling the characters a "found family." That is a biological family. They all have the same last name on their birth certificates.
Say what you want, but back during the pandemic, NO ONE was doing platonic found family fanfiction like the DSMP fandom. They were knocking it out of the park.
In any AU where Kristin is the goddess of death AND a mom, I assume it works like this:
Phil: “Babe… I’ve been thinking, and I think I’m ready to be a father.”
Kristin: “I can make that happen. One sec.”
*reaches into the void and pulls out a baby*
Kristin: “He died of cholera”
Adoption AU where Phil physically trips over Tommy. The kid's sleeping on his front doorstep and Phil is very tired because it is VERY early in the morning and he's already running late to work. He doesn't notice the kid so he falls head-first down the porch steps.
Royal AU where Princess Kristin finally inherits her country’s throne. There’s just one problem: since she’s a woman, she’s not allowed to lead unless she’s married.
Dozens of suitors from around the world come to offer their hands. Instead, she marries the gardener, Phil. [1/?]