This takes place on 3x16 during the witch fight. I hope you enjoy!
"Didn't anyone tell you, black is my color." Regina spat.
"But it looks so much better on me don't you think?" Zelena shot back.
All of a sudden, a cloud of purple smoke arose.
"Sorry to break it to you ladies, but I claimed black eons ago." Said a strange girl, about 13.
"Who are you?" Regina asked.
"Why don't you ask Zelena who I am." The girl said.
Zelena stood there staring at the girl in complete shock.
"Who is this Zelena?" Regina demanded.
"My daughter." Zelena was on the verge of tears.
Everyone was shocked. Mia was the girls name. She had been separated from her mother, her father took her after.
"Oh, and father sends his love." Mia said.
By now, everyone was backed up. Either behind something, or someone.
"Can someone please tell me what's going on?" Regina was now so confused.
"Well, let me catch you guys up." Mia said.
"I became the wicked witch of the east, and worked on a portal for years to return to my mother." Mia had a straight face and also on the verge of tears.
Suddenly, Mia backed up and shot magic at Regina.
Regina flew towards the clock tower, Zelena and Mia teleported to the clock tower.
"That's for being born." Mia spat at Regina.
Zelena tried to rip out Regina's heart but it wasn't there.
"One thing my mother taught me was to never bring a heart to a witch fight. Something she would have taught you if she hadn't...abandoned you." Regina shot.
Mia was now pissed, she lifted Regina in the air and before she could strangle her, Mia was shot with light magic.
"What the heck." Mia was now weak on the floor.
She teleported out, and Zelena followed.
They ended up at an abandoned house that Mia had been hiding out at.
"Are you okay?" Zelena rushed over to her daughter.
"Yea." Mia groaned.
"That was a battle we couldn't win." Said Zelena.
"I know." Mia was now standing at her mirror.
Mia waved her hand in front of her mirror and a picture of Regina came up.
"Did you win?" A voice came from the mirror. Snow's voice.
"I'm alive aren't I?" Regina responded.
Mia waved her hand over her mirror to a picture of her father, Hades.
Zelena stared at the mirror, she always wanted to go back to her husband. But she has to defeat her sister first.
"Mom, I want to go back with you. To the underworld." Mia said quietly.
Zelena thought, go back with my family or defeat Regina. She sat there for a second until she realized there was no debate, that she must go with her family.
The two teleported to her farm house.
"What are we doing here?" Mia asked.
Until she saw Zelena open a shoe box.
"Shoes?" Mia asked.
"Not just any shoes darling, slippers."
With three clicks of the heal, Zelena and Mia were in the underworld.