Berenson, Laurien. Melanie Travis mystery

"After seeing a Great Dane at a dog show, Melanie's younger son Kevin has become obsessed with the giant breed. ... Aunt Peg introduces Melanie and her son to Audrey Kane, a charming older woman who breeds and shows the big dogs. Aware of Melanie's talent for sleuthing, Audrey asks for her help in finding a missing brooch. She suspects her stepsister Lara. Sam and Melanie are showing their Standard Poodle puppy Plum at a dog show where Lara will also be exhibiting her Great Dane. Melanie makes contact with Lara but gets no answers. When Audrey is found dead in her home, Aunt Peg enlists the help of the local Great Dane Club to foster Audrey's 10 dogs, one of whom Melanie takes on"--