Blair, I hesitate to call this woman a narcissist, although a psychologist who evaluated her might feel more competent to make a clinical diagnosis. Astrology developed long before modern psychology.
But I would say she has "issues." People born in 1947 (like my ex-husband) have Saturn conjunct Pluto. I don't think it caused most of them many problems, but Mom's sun (identity, self-image) conjuncts Saturn-Pluto in the 12th house. Control is probably an ongoing concern with her; yet the 12th house indicates matters normally hidden from the person's view, even though they may be highly visible to everyone else. Probably she doesn't see herself as controlling, and may even feel victimized by life.
With her moon in the 4th house, motherhood and home are probably very important to her.
The son also has a 4th-12th house emphasis. He's probably a home-body who feels happiest away from the public eye.
His moon at 17 degrees of Scorpio exactly conjuncts Mom's Jupiter, so probably he is very fond of her.
I think the son probably has difficulty in relating to other adult women, with Venus square Pluto and moon square Mars. He's also got Chiron in the 7th house. Maybe he tried a few romantic overtures to women in the past, and when they didn't work out, this part of him just shut down to minimize the pain.
I don't think it's fair to blame Mom entirely for her son's living arrangements. He's an adult capable of making different choices-- if he wants them.