She probably is casting the spell that Rumble give Belle.
But that would be in episode one, we would assume. Adam did say that episode 1 was all characters, and Rumple gave the spell to Belle not Blue because he wants Belle to cast it. This is also Tink’s episode and Tink and Blue might have some sort of connection. They said a surprising connection to someone on the panel at CC but that doesn’t mean Tink’s connection in ONLY to one person.
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"He was a lot of things to me" "The only conclusion was love"