Leave her alone

"Sure," you shrug, before walking away. "Bye."

At that point everyone else is already talking to someone else, so you slump around for a bit, twiddling your thumbs and waiting for the end of the play.

Eventually, Caoimhe finds you. "Hey, we're pretty much finished up here. You can head off now, if you want."

"Cool," you nod.

"You'll be at the next practice, right?" she asks.

"Uh, sure, yeah," you nod.

"Thanks," she smiles.