No, it's... [her heart belatedly decides to start racing because, while Elsa is pretty okay with touching people now, sudden physical contact when she wasn't prepared for it? ah-
She wrings her hands a little, in her usual self-comfort gesture,] it's fine.
I suppose that's a lesson for the both of us, isn't it, about watching where we're going? [Look? At least she's joking?]