Interesting, isn't it? At first everyone in the family distrusted/disliked Rob (my son-in-law is called Rob, by the way, I hesitated before saying his name today!) except for Helen, who loved him. Now (very nearly) everyone really likes him - except Helen, who is trying to stay in love with him by telling herself she's wrong about things and he's right.
I still wonder about the paternity test, but can't imagine how it could have been faked, the divorce couldn't have been.
There is the postulated visit by his parents - Helen answered the phone, remember. Perhaps if that is Christmas-time-ish it may provoke a crisis!