Tara tucked her face into her arms when John jumped in, protecting herself from the splash. When he was back in the pool, she turned her head so she could see him. "An author? That's fun!"
She turned around so she was fully facing him, noticing the clock on the side wall as she turned. Shit, was it really 6 PM?
"Oh my gosh," she breathed, turning back around and quickly pushing herself out of the pool. "I'm going to be late!"
While John was probably quite shocked at her sudden outburst, he would learn that Tara was prone to disappearing suddenly. And not checking the time when she had to be somewhere. She quickly gathered her towels (forming her fort), stuffing them into her bag, then moved to grab everything else. She'd had far too much fun to check the time.