Allow her to learn herself

"Take your shot, then," you say, smiling.

Caoimhe takes her shot, knocking a striped ball into a pocket.

"Boom!" she says with a grin. "Who needs whose help now?"

"Yeah yeah," you smile. "Take your second shot."

With that, you continue your playing of pool. Caoimhe proves to be very talented at it, making up for her inexperience with pure skill. Eventually though, Caoimhe sinks her last ball before missing the next shot and her chance to sink the black. You're left there, also going for the black balls with a near-ideal shot. You smile, seeing the perfect opportunity to win this, before pausing, wondering if you should.