This is Yumia from Atelier Yumia.

Base character prompt:

Yumia Liessfeldt, large breasts, hair over one eye,

Use hair between eyes instead of hair over one eye if you prefer.

In-game outfit:

hair ornament, jacket, white dress, high heels,

From v2, you can remove her jacket individually.

She wields a staff in-game, so add this if you want:

holding staff,

I have not played this game before, so I don't know what that floating flame vial is called. I don't recommend it due to its inconsistency, but you can use this if you want:

flying familiar,