She is the first boss of the game. She has a good aim, making it hard to dodge. She does however take a long time to reload, so you can stand next to her a keep throwing stones at her. Just make sure you have money to spend on more life.
To begin with Barry and Betty the Beavers are enemys, however they grow close. Towards the end they fight the final boss together, and gain their sticks for their dams back.