We can be family
A guest asked for a oneshot of the Snow Queen taking Emma and Elsa. Spoilers for 4x07!
Her family were complete. She had her sisters. Elsa and Emma were hers now. They could be together, a family.
"I know you're both still a little unsure, but it's going to be ok. I'll look after you both. We're sisters. We look after each other." The Snow Queen told them gently stroking each of their cheeks, ignoring the way they both pulled back slightly. "I'll give you your powers back soon. When you both understand that this is for the best. But I'll take your gags off now." She was true to her word and pulled their gags down. Elsa was in too much shock to say anything, but Emma would not be silenced.
"You are not our family. You are hiding Elsa's family and you're trying to turn mine against me. It won't work. No matter what you try I know my family loves me, and Elsa knows her sister is still alive somewhere. My parents will find us. They won't let you keep me." The Snow Queen smiled, bending down so she was level with Emma's eyes. She might have removed her gag, but it was wise to keep them tied to the chairs just now.
"Your parents aren't coming, Emma. Well, your biological ones anyway. I was your parent once. I loved you like they never will. I still can if you'll let me. And you Anna. You were never understood, like your mother never understood me. I understand you both. I'll help you both."
"We don't want your help!" Elsa shouted, terrified. "Please, just let us go." Ingrid sighed, this was going to take more time than she had hoped.
"I'll let you both go when you understand this is the way things should be. We need each other." But Emma and Elsa completely disagreed. Elsa needed her sister, and Emma needed her parents.