I also changed my vote a bit and added the section "teambuilding".
Since the team setups where she really shines are quite limited her overall rating drooped to B-.
To be honest if she didn't get her new Boss Damage Buff i would have rate her C-Tier as well. That saved her for me.
It's a bummer her Abilities are so contradicting. She is definetely a cool girl. Her Ult. also looks nice and badass.