Lucie is 2.5 and Ned is TT at the same time too. Lucie is doing magnificently and has hardly had an accident at all and is in nappies only overnight now. She has seen DH go to the toilet and him showing Ned how to stand and wee (Ned usually sits down to wee but sometimes will try standing up). ANyway about once a day, Lucie will want to do her wee standing up (over the potty). I am trying to explain that boys wee standing up and girls sitting down but it's a pretty tough concept for her to grasp. What should I do? Do I just not make a big deal of it and hope that she will just try a few times and then resort to sitting? She's never asked to wee standing up when we are out, maybe it's just experimental?