One of my fav headcanons for Teen Wolf is that the Hale Pack or/and especially Derek knew Stiles’ mom.
Maybe she worked in a book shop/the library and early on Derek was a kid that liked to read a lot. And she suggested a lot of books to him that he really liked. And he was really upset to have lost all his books in the fire, especially because half of them were from her.
Or she was a teacher at his kindergarten/school and always allowed them more snacks or more fun time than she should. She was strict when the time called for it and the next she was like a mom to them all.
Maybe she did have a Spark like Stiles and used to help/work with the Hale Pack. And when a current “problem” was dealt with she’d always stick around to hang out with them.
And Derek probably got used to her talking non-stop about her little baby boy/son that would one day mean the world to someone. And he probably thought that anyone that would only be loved half as much as this woman loves her kid, would surely be blessed and happy.
AU in which Papa Stilinski died in the line of duty instead and Stiles wants his mother to be happy again, so he sets her up on a dating website, “MainlineMate”. Only, when one in particular by the name of Derek shows up, he decides he wants him for himself.
Mama Stilinski has not yet succumbed to her illness when Scott is bitten. As her health improves, Stiles stands at his best friend’s side while he navigates peril and the world of the supernatural. After a particularly difficult night caught in the middle of Scott and Allison, the Argents, and Derek’s pack, Stiles goes to his mom for reassurance.
Stiles clambers through his bedroom window and somersaults gracelessly onto the floor–and, ow, the bag of dog bowls he bought to antagonize Derek and his pack, how’s that for karma. When he manages to twist his spine back into place, he realizes his door is open. Flickering light from his parents’ room echoes in eerily from the hallway, and once he drags himself up off the floor, he follows it.
His dad isn’t home from the station yet, or he would have put out the fireplace; the sheriff always yells at his mom for falling asleep with it lit. Stiles understands why she sucks at listening, though. The snap of the wood and blanketing warmth make it easy to just close your eyes and drift.
Treading as quietly as he can, Stiles sneaks over to the side of the bed nearest to the fire. His dad will give both him and mom judgmental looks in the morning for being careless, but if he tries to say anything, it might be worth it to offer bacon as a peace offering. In the end, exhaustion wins out over fire safety, and Stiles drops flat on his back with an appreciative groan.
Too late he remembers that his mother is sleeping and when he pops his head up over the edge of the bed to check, she’s wide awake and shaking her head at him fondly.
He laughs and slides back down to the floor, his silence his apology.
Stiles remembers getting off the phone with her, begging her to come pick him up from the sleepover. She’d only left him an hour before, but he didn’t like being picked on by Jackson, was afraid tonight might be the night that the old Sheriff would be coming to say daddy wouldn’t be coming home again and where would he be if his mother needed him? He needed to be home.
It was dark before Ms McCall, voice shaking and tears in her eyes, told him that his dad was there to pick him up.
He never imagined that it would be his mother never coming home again.
A good samaritan had managed to untangle her, pull her to the surface, and get her heart beating again. However, with the amount of time she’d been without oxygen, terms like brain dead and no hope were thrown around. It took weeks bleeding into months before the Sheriff could tell them to let her go. When she’d kept breathing, Stiles clinging to her hand, he’d felt hope exploding in his chest. But it only lasted for a few minutes before she was gone forever.