Right. She should've known. It's definitely not a good time to try and have a sincere talk with 9S. In fact, Rita feels a little stupid for trying. And speaking of stupid...

"You morons. There aren't any snakes here. We're on the moon," Rita reminds both of them, sounding exasperated and not budging from where she is. Not like she'd be scared even if there was one. Also, she's pretty sure snakes can climb.