[As far as he's concerned, you overstayed your welcome in the hospital weeks ago- or perhaps understayed your welcome where you should have been, during that time. For a moment still he hovers close, making sure Art won't fall over... and then he takes a few steps back, feeling strangely reluctant.
But they have to go.]
Nah, the nurses're gonna be heartbroken, not havin' you to look after anymore. [Clearly the way to deal with this topic is with a light, joking tone and words to match.]