Yesterday my husband and I went back to our breeder for a visit where we got Cookie from. We took Cookie with us but she wasn't too thrilled. I guess it was the combination of unfamiliar territory (Cookie's 10months old) and all of the other dogs there. Cookie is usually very friendly with my brother's multipoo but yesterday she just curled up in a ball in my husband's lap. We went to the breeder to visit and see which dogs she is breeding because we want another puppy. When we got home yesterday, Cookie would not look at me and wouldn't even sit in the same room with me

She followed my husband around all day yesterday after we got home. My husband left for an hour or two and Cookie waited by the front window until he got home.
My question is, Is this normal behavior from a Yorkie? Will another Yorkie pup in the house make her jealous? My husband and I really would like another Yorkie in the house for Cookie to play with but we feel like we're "cheating" on Cookie. Has anyone else experienced this? What should we do?