She is a tree- 

She goes ' I am Groot ' before summoning branches, also Nightmare if he finds her or meets her is probably going to be like ' IB, ALEX YOU HAVE A SISTER '

Yes, she is an orphan.

Anyways 

Name: ? 

Nickname: Blueberry

Age: 12  

Likes: Blueberry's, anything blue or purple, fruits, trees, stealing cause she is a sneaky girl, Groot ( She carries around a plush of him ), music

Dislikes: Being told no, most adults, bland things, dragon fruit, scraps 

Other: She is a mix of a plant and something else, she can control trees and make elemental like trees, says ' I AM GROOT ' a lot..., her scarf can turn into hands, CANNOT BE NEAR FIRE