The Abbey Girls on Trial by Elsie J. Oxenham

Rosamund has a tough time in The Abbey Girls on Trial (1931). Her father, who lives in India, cuts off her allowance as he has decided at age 60 to marry Eleanor, a "beautiful girl" of Rosamund's own age. Having lived at Abinger Hall for years, Rosamund decides to start a craft shop in a tiny cottage next door to her new aunts' tea rooms.