Lola had been focusing on climbing but she had been listening for movement. The fact that Keith didn't start moving right away was a little concerning. Until she glanced back to see where his focus was. The smile on her face says 'yes she knows' and also 'she quite likes being looked at.' At least when she knows whose doing the looking, and appreciates them in some way. It makes being appreciated a little more meaningful.

She may have winked at him? Just to sell the point. If the smile and the knowing look didn't. Still, with that out of the way she's climbing again. She's good but Keith can catch up if he can focus. It probably helps Lola's a lot better at teasing, being checked out, and checking others out, than Keith is.