Or is it a novella? The Widower, by Mohamed Latiff Mohamed, was not recommended to me by anyone, but I found it during my recent browse in Singapore Kinokuniya. It starts with the meditations of a man whose wife has passed away and who then delves into his obsessions.
Although the book was published in the 1990s, it was translated into English only this year; I hope Michael Orthofer at Literary Saloon is paying attention. But alas it is not for sale on U.S. Amazon.
Here is my earlier post on what are the Singaporean literary classics, there were a few good answers in the comments.