Is she warm? She raises her hand to check, and sure enough the side of her neck feels hot, like she has been startled into a bright blush from that touch. Lily knows what she's doing - it's one of the reasons Hermione is so in love with her, truly! So she trusts Lily, she really does.

"I suppose...alright."

Luckily, for both of them, Madam Pomfrey manifests herself in that very moment, so Hermione does not have time to reconsider.