and her saying "No you weren't"
I often find the more positive someone is about another's experiences and feelings, the less they know of that other person really feels, and the more they are projecting their own thoughts, feelings and opinions onto that person.
Plus when it comes to things from our past, especially involving family, our and their memories are far more flexible and changeable than we all realise, and the brain is constantly modifying our memories in ways that are often impossible to even be aware of.
We all adjust our memories to fit the picture we believe was the case back then, and reality often has little to do with it. This isn't conscious or deliberate, in fact if it didn't happen that would be dysfunctional. People tend to assume that how they see something must be pretty much how everyone else see's it, and make that implicit assumption, when the reality is we don't match each other nearly as closely as we think so we misinterpret many things about each other.
And also for a parent to believe they ignored some serious problem in their children is tantamount to believing they abused their children in some way, so to accept, say, that you were shy may to her be something very hurtful. She may, for example, have guilt feelings about something to do with child rearing, and this may be a profound attack on the constructed belief that she had not failed you (regardless of the reality of what really happened back then)?
I suspect feeling unseen by loved one's is not an uncommon experience for many ND people.