Books in The Exiles series
Mr & Mrs Conroy send their daughters to stay with their grandmother while they spend a modest windfall on having their house extended.
Unstated family warmth. Sense of honour and courtesy the girls show in public.
Ruth, hiding in the school library when she's feeling ill, rashly fills in a form to sponsor an African schoolboy, writing her age in such a way that it looks like she's 18.
Slightly wacky but realistic family of girls. Determination not to let down the African schoolboy they've rashly promised money to. Their ingenuity in trying to get money for a good cause. Valuing older people.