It's nice to meet another person who is mom to a Bella! There is about a 30 lb. difference between my two, and there have been times when they were playing in the back yard that I worried about Ripley just because of Bella's larger size and feared that she might hurt him accidentally. I would keep a careful eye when your two are together and I know you will. I know some shelters won't adopt small dogs out if they are going to homes with a big dog so there is always concern. It's nice to 'meet' you and of course we'd all love to meet them through some pictures!