From what I can understand, she is Cockspur Coral Tree.
Skills & Abilities
Active Skill:
Twin Dragon Flying Blazing Wheel Slash
Trigger Chance: 18% (Lv1) → % (Lv5)
Deals 1.2 times more damage on two targets
Ability:
During combat, increase the effect of Solar Drive by 10%
I have no idea if she will be added to Nutaku. There are a ton of additional units on that site.