She saw him get hit. She smelled the blood in the water. Not good. Probably something he could handle, but they didn't need him getting hurt too much. When one came after her, she swiped with her knife, forcing him back a little, allowing her to grab him from behind. There was a thrashing as she winced, her skin digging into him. More importantly, though, she was grabbing to hold on with her hands squeezing right on the bastard's gills.

He wouldn't last long like this, and she needed to get to Finnick quickly. As his form started to thrash less, she growled through the water, shark teeth very much apparent, just as the one went limp and she started to swim in Finnick's direction. Probalby not dead, but they could deal with him when he came to.