Why doesn't my dog want to be around me?

Well, I've had my my dog for about 6 years now and yesterday we got her fur shaved because it was getting hotter out. So after when my mom and I went to pick her up from the groomers she was fine but after when we were having dinner so went downstairs half way through(which was weird because she always stays by our side when we have food) So we eventually got her upstairs and put the gate up and she kept going to go downstairs but stopped at the gate. She also sleeps in my room and we got her in there just fine and my mom also noticed her weird behavior and we thought she was just tired from the groomers. But now today when I got home from school she was in the basement again so I got her upstairs with a treat and put the gate up again and after the treat she went right to the gate again so now I have her beside with a treat (again) and I find when I called her she won't look at me. So is something wrong with my dog or does she just not want to be near me?