...and in the next scene he is startling her by walking in her front door, unexpected.
I hate to spoil that little moment with words. But it has a beautiful economy, and it has the plainness and clarity of the best popular art. His mam, who is now going to walk away more into her own life as his upcoming marriage puts him more into his own. The sudden idea of going to her freely, because he needs to, even though she is preoccupied with her own normal daily concerns like the groceries. --Not, as often in the past, dealing with her because she is coming to him to put some demand on him. She is going the other way, he must act at once, she can only help him if he takes action on his own. The opportunity will only be there for a few seconds, she is about to turn into the house and disappear, as his chosen life is about to close in all around him. She has not seen him, she does not know he is standing there and she does not know what he now knows, who he really is, unless he tells her himself.
MAM!