Is my mother right in this or is she being a cow?

I am 21, from Ireland and a couple of months ago I went to Dublin as I had an appointment with a psychiatrist but I wanted to keep it private. I am from Cork just fyi. I told her I was going up there before hand but kept the reason why to myself. She tells me I deserved a belt for going up there and I guess for being independent like that. When I did go up there, there was a mistake with the bus timetable and I eventually had to get the train. I rang her while up there and over the phone all I hear in the most childish, spiteful tone 'IDIOT' for getting it wrong and making a mistake. A couple of weeks later I got a letter from my psychiatrist and my mother actually opened the letter that was private and confidential and meant for me. The reason I keep her in the dark is because she always makes cutting remarks to me and I feel bad around her and she also justifies and rationalises when other people are disrespectful to me. She is just fine with it really. Anyway, it feels sort of horrible for her to be telling me 'you deserved a belt for going to Dublin on your own' as it makes me feel like I am about 5 or even actually a 'dog' that runs out of the gate into the road that you then 'belt' for not doing what they are told. I don't know. Does this sound like control issues because it is starting to feel really bad and oppressive to me? My parents were like this when I was a child to a point that I was stuck inside in my house on my own and my brothers were allowed to go out and be independent and all of that. When I was a child I remember begging my mother just to even let me cross the road and she never would. If I went around the corner to my friends house, I would always be supervised getting there and it was about 2 minutes away and my friend at the time was very independent. We live in a very safe area and she was able to hang out with all the neighbourhood kids in a park nearby. I remember resenting this kind of control as a kid because I was kept inside but I didn't really have very many toys, I didn't have a bedroom, I was in my parents room, I saw a double standard with my brothers who would then bully me for not having any friends when really my life was completed restricted, and I became a very depressed kind of child and I still suffer from depression actually. I was this little child overprotected but then whose life was filled with nothingness; no fun and with my only experiences being that of my brother bullying me, molesting me, my father getting into rages with me and my mother rejecting me if I cried. It seems more like control if a person restricts your freedom and at the same time adds nothing posiitive to your life. I would just stare at the walls or walk around in a depressed haze. I am finishing a masters before you say 'move out'. I cannot just yet.