"Oh no, it's definitely not a joke." Excellent points are being raised. Slightly stressful points, as she's so desperately keen to get this right, but she's thankful they're being made.

"I think we get each other quite well. And there is a mutual challenge with humour." Judging by the way she quirks a smile, the latter part is sort of meant to be a joke. Except it isn't really. And kind of illustrates the point.