She seemed tame, because when we got in the pond to clean, she'd chase us around in a friendly manner. Usually, new arrivals run away from human feet. I saw that same Florida cooter standing there, staring at my backside, waiting for some attention. She was quite a character. We have one male who constantly tries to get the females' attention.
Male turtles have noticeably longer fingernails that the females.
So, if you see this kind of behavior where one turtle looks like it's in another's face, that's just turtle courtship. Last month when we drained the pond, someone informed us that one of our turtles didn't look well. We checked on it, and she had apparently jumped off one of the logs, but with the low water level she'd landed on her back and was unable to flip herself over. She was quite calm. As she lay there on her back, she moved a leg here and there to see what that might do.