Good lord there are a lot of spiteful people on this thread! You all just jealous, or what?
Lighten up, for crying out loud. This is not a browbeating contest. It's supposed to be a free country, and she doesn't have to do things the way you would do them. Let people do things their own way. It's not up to you. She can have any pitch on her roof that she likes and cover it with whatever she likes. She could live in a sod hut and thatch her roof and it's still none of your concern. Live and let live. Sheesh, talking about the "Mrs. Oleson" syndrome.