(This prompt based on the Serum Queen, post-Season 6's events!)
"And you want my help.. why?"
The Evil Queen raised a perfectly sculpted eyebrow, hands on her hips as she looked over your reflection in her mirror. You never thought you'd find yourself talking to the Evil Queen. Sure, you talked to Regina on a daily-basis, but she'd long been redeemed. She wasn't as willing to break the rules anymore. But her other half, however..
You were Zelena's kid. You had been trying to learn magic, and Regina had let you borrow her mother's spell book. Until your mother had found out. Zelena wasn't happy, to say the least; she strictly forbade Regina from teaching you how to use the spells in the book. But you weren't so easily deterred. If Regina couldn't help you, then maybe the Evil Queen could.
After Regina had transferred some of her love into her heart, the Evil Queen had turned over a new leaf: she now stole from the rich and gave to the poor, alongside her partner, Robin Hood, in the Wish Realm. So, you figured there was no harm in contacting her. You used the mirror in Regina's vault to contact her; she had taught you that spell before Zelena had found you out, figuring it would be useful for you to know, just in case you ever needed to contact them.
"I want your help because my mother won't let Regina teach me. But she never said that.. you couldn't."
You replied to the Evil Queen's inquiry, looking at her hopefully. You had always loved the idea of learning to use your magic. After all, you were born with a gift; why wouldn't you use it?