Welcome to the forum. Let me think on this for a while. I have three
sisters. And even though only one didn't have children till recently it wasn't
because of the same reason's as your sister. But she would never have
tried to tell me how to raise my sons.

But I too wonder did you get anything out of the parenting classes. The main reason I personally ask is I've taken more than one kind. And enjoyed some of them. And nota enjoyed others. So if you don't feel like you did
try another class.

Also I would like to suggest that you have your sister who has unrealistic
ideas about parenting go to some classes with you. Because if she thinks
that its not possible to yell at times at children then I believe she might
be in for a surprise. Just like adults children at times get under our skins.

I know my now 4 1/2 year old grandson, is very hyper, and other things. I
try very hard to understand that he is delayed. And has problems, but there
are times I yell at him too.

THen there are his three sisters, who have some learning problems, but you will find me frustrated with either life, or something else. And yes, I can yell
at them too.

Donna