Mousenet

Sent to live with her chef father and his wife in Oregon after having stayed with her inventor uncle and scientist mother in Cincinnati, ten-year-old misfit Megan is lonely until she starts working with some computer-savvy mice to try to save Mouse Nation--and the planet.

"When a timber company threatens to cut down the rainforest on the island of Marisco, Megan's mom leads the effort to save it, with the help of the Mouse Nation. The mission takes the family (and mice) to England, where the trail leads to a duke's palace full of dangerous humans--and helpful British mice"--