I So Don't Do Mysteries by Barrie SummyClick on the cover to find a library copy.
SUMMARY: About to be shipped off to San Diego while her widower dad goes on his honeymoon, seventh-grader Sherry(short for Sherlock) Holmes Baldwin prepares to put up a fight when she is contacted by her mother's ghost. Killed in the line of duty, her cop mom is flunking out of an afterlife law-enforcement academy, and she needs Sherry's help to crack a case at the San Diego Wild Animal Park. So what if Sherry, a self-proclaimed screw-up, is nothing like Nancy Drew? (This is the summary from Publisher's Weekly taken from Amazon. com.)
OPINION: This was a good read, I really liked the fact that even if Sherry was always doubting herself, she wanted to help her mom and that allowed her to get over her inability to take on situations. Things are helped by the fact that there's a super cute guy in the picture. You'll find yourself very happy you took the time to read this story and I look forward to reading the other two books in the series.