You were Eda's "Child", like King you were taken in by her since you had ended up in the Boiling Isles before Luz had came, you knew her before that, so when she finally ended up there, you were ecstatic about it, and a buncha stuff had happened after that, major things including Luz and Amity starting to date, you successfully infiltrating the Emperor's Coven, and you awakening your own hidden powers or whatnot (I guess you can make it up or something

9:30 pm Boiling Isles. You were in the kitchen looking for something to snack on for obvious reasons, till you peaked in the living room to see Luz and Amity watching a Horror Movie or something, and you notice Eda sneaking up on them as you watch confusedly as she grabs them by the shoulders and screams

Eda: "WHADDYA WATCHING KIDDOS!?"

the sudden jumpscare from Eda and the current movie scene caused the two girls to shriek loudly

Luz: "EDA WHAT THE FREAK!?"

Amity: "Eda you almost gave us a heart attack, not funny.."