Does Your Dog Hate Being Groomed?

I started grooming Cha cha my chow chow myself when I got her at 3 months old. In my experience the more I am agitated the more she is also, so I try to stay calm when I bathe and groom her. I have a habit of singing slow songs more to soothe me while I brush and detangle her coat and in turn it keeps her calm as well. I think it still stresses her a bit though because it does not matter what time of the day I bathe her she still has to pooh and pee after every grooming session.