UNITE, FIGHT (3)

Saying this, Sina waves her hand and a pill exploded into a white smoke that in front of her and envelops the space around her

The smokes settle away and people could see that there is a round board floating a few meters above the air. 

Sina jump into the round board and then flew to the sky toward the direction of the battle

She did not say anything or ask them to follow her

She just made her decision and executed it. Sina is always seen as the most rational among the close circle of Azief.

But that is just because all the other three is crazier than her this giving people the impression that Sina is the normal one among their group. 

In the other timeline, she was called the Mad Alchemist. Even though she is not called like that in this timeline, that streak of craziness is still there.

She disregards what Sasha is doing. That is Sasha plans. And she has her own plans. She would simply see whether she could help or not.