I read this book in the 90s, but I think I may have been published in the 80s.
It was a modern era story. There are two sisters, one is responsible with an adult daughter getting married. I remember at least one woman wore a tartan sash across her chest, but I am not convinced it took place in Scotland, though it is possible.
The other adult sister is kind of a mess. Alcohol or drugs, perhaps? I remember her as the beautiful one who got all the guys, but deeply unhappy. It is mentioned that she wore Poison perfume, and it spills in her room.
I associate the color red/burgundy with this book, so it may have featured on the cover of the book.
Stump the Bookseller
New format, same book stumper solving.
This is September, by Rosamunde Pilcher. An adult novel rather than YA, published in 1990. It is set in Scotland. The detail about spilling the bottle of Poison perfume is a key that confirms it. And the original cover featured a red/burgundy square with gold letters.
Yes! Thank you so much!