My DD is 5.5. She discovered he parts when she was about 3.
We weren't particularly shocked & she is told it is private & mustn't be done infront of anyone. Our plan has always been to pretty much ignore her.
However, she is constantly at it. I mean always. For example, we're in the front room watching TV & I get up to switch the kettle on, in this nano second she is doing it.
DH& I are also increasingly uncomfortable with hearing her (quite loud) grunting& sighing when we are in the next room.
I know you are not supposed to make children feel ashamed but I am getting to the point where I just want to tell her she must not do it never.
Sorry, I know this can be a bit of an uncomfortable topic but I am really at the end of my tether with it.