I'm so glad you persisted in adopting a rescue! We have two rescues two. (German shepherd mixes) Both were very nervous when we first got them. It took months for them to realize they were in a good place and could relax. It's challenging but so worth it! They're still nervous around strangers. Not sure if that will every change, but they're a joy to have around. Rozie looks like an awesome dog! Rottweillers are wonderful pups. :-)