Well if you stood up to your Mum I guess you got yelled at for being defiant.
But that was a long time ago.
Something I heard a while back resonated with me.
"if something happens to you a long time ago and you didn't do anything to deserve it, that is not your fault. If you're still carrying it with you a long time later and it is still causing you emotional pain... That is your fault"
Maybe that will help you like it helped me