What makes Elizabeth Gaskell’s works stand out is that the young and old are both given care and attention to be fully realized individuals. Unlike some stories, the focus on a particular character doesn't mean that other age groups aren't given plenty of characterization, story and attention.
The value of showing these different age groups dealing with love, friendship and social norms is the allowance for a richer story.
“Cranford, in 1842, is a market town in northwest England. It is a place governed by etiquette, custom and above all, an intricate network of ladies. It seems that life has always been conducted according to their social rules. For spinsters Deborah Jenkyns, the arbiter of correctness, and Matty, her demurring sister, the town is a hub of intrigue. Handsome new doctor Frank Harrison has arrived from London; a retired Captain and his daughters move in across the street and preparations for Lady Ludlows garden party are underway. The town has some secrets which are about to be revealed. But news comes that shakes the town, a railway line from Manchester is coming to Cranford.” (from novel description)