Is AUTHOR wrong in the post ? POST : So my family is strange in the ways. My parents are split and my mom who is single works for most of the day. Because of this I come on my school bus to my grandparents who are very kind and caring. I spend more time with them in their house then my moms (doesn’t mean I love her less). Now here’s the thing I’ve been noticing: she treats me differently with her parents around apposed to how she treats me without them around. One example of this and the most recent one is that I made a minor mistake in school about a teacher I dislike. I’ve complained and vented about this teacher before to my mom and she agreed with me for most of the time so this surprised me. While talking and explaining how this teacher was unfair, my mom blurred in very sassy-like saying how the student should listen to the teacher no matter what. Then, she looked at her parents as if she was looking for some sort of agreement or approval. I was confused, shocked, and felt kind of betrayed. Next, my mother started lecturing me on how teachers sometimes have a rough time with students and that it can probably get annoying (my mom is not a teacher). My grandparents then agreed with her slightly although my grandfather didn’t seem much in agreement. I stormed off into my room later that night once my mother and I were alone and yelled at her saying that she acts like the way kids do when they treat others differently when their friends are around. 

So people of reddit, Am I the Asshole?