Tink is so bubbly-gum cute, that her menace might catch you off guard. The way that Tink uses her fairy dust to knock Regina unconscious makes me think of the magic poppy knock-out dust that Mulan gave Emma to knock the giant unconscious in 2×6.
I think she may be a double-agent though.
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"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy