Hello @alwayssmiling
That sounds like a really tough thing to be dealing with as I can see that you would like to move on and tell them what things were like for you growing up - really hard, sometimes when people are in denial there is a part of them that knows that what happened was not good although it is dificult to admit that so a strong coping mechanism comes out as defensiveness and denial.
It can be really hard to change that and as you have experienced opening up to them before they have shut you down, I am sorry that was the reaction you have received when you really deserve to be validated and supported.
Have you ever tried writing a letter but not giving it to them? Sometimes this can be a good start for some and that way you won't risk being invalidated but still able to get those feelings out? What do you think?
Lunar