KittyKat > Status Update

I need help locating a book. The book is about this black girl who is married to a cop but the husband dies one day on duty. So a year after his death she goes to this bar and get drunk and have a one nightstand with a white dude. She slips away before he get any info about her. As a result she had a daughter from him. She moves way from home like 4 years later for her new job and her boss is the one night stand