She is a DPS unit that can apply grievous effects on the target, causing them to take additional damage. Can work well in some situations, but overall is not something you want to use constantly.
Tower of Fantasy Team Comp
The two best characters for the DPS team are King and Nemesis. The third one could be Crow, Tsubasa, or Samir. (X2 DPS + X1 Support Utility.)
The two best characters for the Tank team comp are Huma and Meryl. The third one could be King or Zero/Nemesis – one DPS. (X2 Tank + X1 DPS/X1 Support. )
The support utility team comp would have x2 utility characters and X1 DPS, i.e., Samir. Utility characters that you can use in the utility team comp build could be Nemesis, Zero, and Cocoritter. (X2 Support Utility + X1 DPS.)