People Might Hear You is a children's novel by Robin Klein, first published by Puffin Books in 1983.
He is intimidating in his ways due to his firm belief of an upcoming war that ends the world.
Quite suppressing, Mr. Tyrell abides the laws of the temple so fiercely that he is quite an ominous person to Frances.
Rosgrana, Helen and Claire are Mr. Tyrell's girls who have been brought up in the ways of the temple.
She is often left in charge of the house when Mr Tyrell has to go and run errands 'outside' and makes utilitarian clothes for herself and the other family members, which Frances despises because they are drab and old-fashioned.