Eagle-Eye Ernie Comes to Town by Susan Pearson, 1990.
Ernestine Jones, better known as Ernie, is upset because her family has moved from Newport News, Virginia to White Bear Lake, Minnesota. She has no friends at school, and the other kids all think she’s strange and that she talks funny because of her southern accent.
Worse yet, someone has recently started stealing things from people’s lunches at school, and some of the kids think that Ernie might be the thief. Ernie has a knack for finding things, and her father says that she has an eagle eye. To save her reputation and any chance she might have of making friends, Ernie needs to use her eagle eye to find the thief so everyone will stop blaming her.
Ernie not only figures out who the real thief is but even helps the person find a solution to a bigger problem.
This is the first book in the Eagle-Eye Ernie series. The books are easy, beginning chapter books. The series starts with Ernie moving to her new town and making some new friends. These friends, William, Michael, and R.T. (Rachel) end up calling themselves the Martians because Michael is interested in outer space and likes calling everyone a Martian.
One of the cute parts of this book was when Ernie painted her saddle shoes to look like little bears in honor of “White Bear Lake.”