Ah, now he is inconveniencing them. Of course he is pleased at her words but they can be just words, she does not have to live by them.

'Children, you need not stay. You have your lives to live - come and see me a little, and I will remain until I am well, you need not give up the comforts of home.'

Really, all he needs is to know she will come back, and that he might see her.

'I promise I will worry about nothing.'

This is a lie, because there are still the things she says she knows. But he does not want to think of them yet, and if she does not broach it then he will not.