Flurry Heart tried to fight off Starlight Glimmer- she wasn't about to let her put Chrysalis and Tirek back into stone, not even the compromise of leaving Cozy Glow alone was going to make her consider the option. There was one issue though- Starlight isn't known as one of the most powerful Unicorns since Twilight Sparkle and Starswirl the Bearded for no reason. Compared to Flurry, who was still learning and growing- even Alicornhood couldn't keep her at bay.
… Thankfully, there was a witness.

—-

I was thinking about this one. Could Starlight actually take down Flurry? But then I remembered some specific details. Starlight has; removed the cutie mark of an alicorn and her friends using a spell she made, messed with the timeline using a spell she made, almost killed discord, and she almost would've defeated chrysalis on her own if it wasn't for the fact chrysalis was empowered by grogar's bell. Saying all that? Yeah, I think this is possible.