Rosie was one of the many who aided in getting refugees out of Mobotropolis and safely to Knothole during Dr. Ivo Robotnik's military coup. Previous to this, she served as a nanny to the House of Acorn, Sally Acorn being her special charge. Her cousin Julayla Chipmunk served as Sally's tutor until her death, and Rosie continued to act as a mentor and friend to the younger generation in her memory. Rosie also survived the Original Freedom Fighters, whose leader Tig Stripe was also a close friend of hers. Since the demise of Robotnik, Rosie has acted as a nanny and baby sitter for younger Mobians and offered advice to Sonic the Hedgehog and others when they have needed it. (StH: #43, #54, #142, #143, CSE)