Trading Rosemary

In a world where experience is currency, Rosemary is the owner of a very special library-a library of memory, where scented coins transfer personal experience from one individual to another. When she trades away the sole memory of her grandmother's final concerto, family opposition, in the form of her daughter Ruth, forces Rosemary to go on a quest to try and recover the lost coin. Yet having to trade away her own memories to get it back, how much of Rosemary will survive the exchange?