u/Character-Pin8192

I had this book when I was younger and I cannot for the life of me remember what it was called, but it was a middle aged kids book, part chapter book with some pictures. I was about this young girl spy and it was very girly. I think she had a chihuahua (at least some type of dog) and went undercover at a dog show at some point. It was in cartoon, not realistic style. That's all I can remember but if anyone knows anything the help would be much appreciated. Thanks!