I use her with Kyo, green Monspeet and green Escanor. I've used her even before I got those three and she has carried me through majority of the story mode.
I feel like most people will say she's trash or whatever but I personally like her.
she ain't a bad unit! She is amazing for book farming and can work on a ignite team! She would be even better and more pvp viable if they gave her better stats which they probably will once we get a new gulia