Re: I don't know what to do to help my DD
I don't know about your child, but mine knows the potty that mommy uses and has never agreed to use the little potty chair. It may help if you get one of these and so she feels like she's as big as you.
DD has only ever pooped in the potty once and she did it with this seat. If you seat her on the little chair, she closes the lid, sits on top and thinks she's doing it right.
SAHM to Magnolia May (09/10), Luke Russett (04/13) and expecting 11/16. Wife and best friend to my airman.