Can ghosts blush? Apparently so with how her cheeks seem to take some colouring to them, her smile bashful as she wave her hand back and forth as if to turn down the offer of company but.

Judging by how happy she is, Clara really is happy that he extended something so kindly to her.

"Oh! I'm so flattered a young man like you would like to spend time with a silly old biddy like me." She's so bubbly right now, her mood happy as it could be, and while it doesn't effect the room as it normally would like when she's upset -- There's something about the way she just lights up that shows she's very happy. "It would be an honour to spend some time with you, just enjoying the moment."

It won't hurt to have a small break, would it?