Eye. And even if one was in the current vicinity, we would have other problems.

Back to the road, her eye does narrow and she took a leap. Feet planted and a flip, they're on the roof now. Swift step and leap over, there was something suspicious enough. A literal dorsal fin was sinking back into the sand and moving with intent away from them. No no, a few feet wouldn't have contained something that size. If only Kishin eggs didn't dissolve on death, she wanted to do a little more than kill it, but oh well, may as well slice it to pieces.