It's still helpful to have tentacles dropping off into the water with great crashes, meaning she doesn't have to worry about anymore. Another great thing appears to be that kraken, like giant squid can be canibals.

Just opening the skull enough to let blood flow seems to be enough to get another kraken to finish the job on the injured one.

She zooms through the water, one after the other, vaguely listening to Metallica through ears not built to register car stereos, attacking swiftly, moving on fast.

There's plenty left for Dean to shoot, even while they set on each other.