This is totally normal! It'll take some time, maybe a few days, or weeks, or even months but she'll come around to the new pup eventually!
My big guy is 7 1/2, the only dog in our lives for all of HIS life and then all of a sudden this summer I brought home a new pup. It took a week or two but now my boys are the absolute best of friends!
Give it time, it'll all work out! =D
__________________ Amanda |