My rosy boa is about 10 months old and has been raised by the breeder on live pinkies. When I try to feed her frozen, she slowly takes the head of the pinky in her mouth, then releases it and moves away. How can I get her trained on frozen thawed? It is not a HUGE deal, because she will not get big and I will be able to move from hoppers to rat pups, skipping adult mice, so she will not have to eat "dangerous" live feeders. However it would be easier, and I would prefer to feed her frozen thawed.