In time I was more centered. Early sobriety is confusing and the boundaries between me and other people had become blurred and uncertain. I think one of the scariest parts of early sobriety was that. I had a hard time knowing where I ended and others began. I thought I knew everything and I did quite a bit of mind-reading when I was drinking, so it makes sense that I felt like people were being intrusive with their, "suggestions," when really they had no power over me. I think alcohol breaks down inhibitions and it also breaks down the natural protective boundaries necessary to a healthy psyche.
I did a lot of work around this.
People are going to try to control. That's what they do. I agree with NMD, finding a way to deflect and/or change the subject is a great social skill.
It's truly none of their business about your mother or your sister. But if you talk about them, people are going to have opinions.