Ask Keira to kiss it

You: Sure, why not.

Keira: Huh?

Keira turns back towards you looking confused before shaking her head and smiling slightly.

Keira: Oh, you need me to kiss it? Haha, go find mom.

She turns back towards the TV but seems to grow uncomfortable, she keeps glancing across at you looking slightly worried. You try to ignore her as you watch some show about people who own a junkyard, when suddenly Keira turns to face you and leans across, pressing her lips suddenly against your still sore wound. You give her a strange look.

Keira: Okay there, better?

You: Uh- yeah? I was kidding you know.

Keira shrugs and turns back to the TV again, like that was a completely normal thing to do. She no longer seems uncomfortable.