High pick huffs and puffs out of exertion.

Thistle, still invisible, says
Hi.

Highpick seems confused.
Huh? So you actually DO have an invisible friend? It's not just something that people say. That's a surprise.
She smiles a bit, which is quite a typical for her.

Thistle giggles.
You can't even sleep without somebody watching you unseen.

Highpick seems aghast and taken aback.
I didn't need to know that.