Miz Gustafson may hold a bit of animosity towards Christianity.
But...She's a “professional” “edddducator” and would never, ever, let that animosity seep into her classroom. Nope! Never! /s
Looks to me the Teacher had more to fear from Bristol than Sarah. Bristol looked like she was ready to beat the crap outta her. Perhaps Bristol has finally realized what her mom is up against, including that jackass Levi.