The best thing to do is to make her sit on the pot in the morning whether she wants to pass or not. However, do not make her strain to pass the stool when she doesn't want to pass. Gradually her body will get tuned to this. Secondly when she passes potty while making her sit on the pot in the morning - appreciate her and express your happiness. Its also a good idea to give her to drink some liquids (milk is ok) before she sits on the pot.