[It's clear how taken back she is at the offer, for a few moments-- but her expression fades into something softer, kind. She truly appreciates it, but she can't take the girl up on that, even setting aside the things she has to do today. It would seem too strange, she doubts she would be able to react properly and she's accepted such things.
She's not a child now, the time has passed]
Thank you, Klara... but it's alright. You should definitely go ahead and enjoy it, though.