Maybe you are (trying ) too hard. at 2 she is just starting to get the hang of it, and if you just suggest, mommy has to go potty do you need to go too, we'll take turns , I'll let you go first. Make it a pleasant experience, Don't suggest it too often, at this age no sooner than every two hours, and then of course act real proud or have a chart and give stickers if she goes, and don't make a real big deal of it, if she doesn't and if she is goes at school, I think in just a little time she will start going at home. She may feel you are forcing her at first and doesn't really have to go when you first suggest it. Lots of reasons for a 2 year old, as so many at this age are just starting to potty train, and haven't got as far as yours sounds yet.