Of course it isn't. If she is happy, well behaved, she is not over weight, and is getting some other stimulation, like playing in the garden, then to a certain extent she has to fit in with you. I do not know whether your darling is from show or working stock. Rufus is from working stock and needed 3 walks a day until he was about 2. He is 4 now and he gets about 2 hours a day in 2 walks. This is because I have time, now I have taken early retirement and the kids are grown up and as he is my first dog, I am afraid he has rather ruled my life!