[She nods encouragingly, unfazed by the second attempt not being too much better than the first.]

Precisely, it's an improvement. Take what time you need, there's no reason to rush yourself. I live on the second floor, so it wouldn't be any trouble for me to give a demonstration if you like.

[Well, not much trouble. She's going to ignore the fact that the bug spreading around is making her feel less up to such things than usual.]