Well in Charmed I remember they threw potions at demons in a similar fashion. maybe the witch is in the room,though I doubt it. I think she is showing Emma something magical and maybe gets frustrated with her after Emma doesn’t believed? Or maybe she wants to see Henry and is trying to conjure up some magic to bypass the curses price of not seeing him and it fails and she throws a hissy fit
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"I could have the giant duck as my steed!" --Daniel Radcliffe
Keeper Of Tamara's Taser , Jafar's Staff, Kitsis’s Glasses , Ariel’s Tail, Dopey's Hat , Peter Pan’s Shadow, Outfit, & Pied Cloak,Red Queen's Castle, White Rabbit's Power To World Hop, Zelena's BroomStick, & ALL MAGIC