Toph's not really used to people listening to her. Her parents certainly never did. Aang listened when it was about Earthbending, but he was just there to learn. Katara - she looked after Toph, but she didn't listen a whole lot. The only person that ever has listened to Toph is Sokka, and he...

...he has Claire now.

"..she was liek a sister to me," Toph explains. "A bossy older sister who wanted to be my Mom, but... she was better at it than my actual Mom."