Well, this is some complicated for translate but here goes.
She was caught by her mom and well this is the discussion about:

Mom: why you have the diaper on later of bathing, the diapers suppose is for the night huh?

Ellie: i know, i have bedwetting problems, but i like keep my diaper on during the day.

Mom: But you don´t need it during the day, your friends don´t see the diaperBult?

Ellie: My friends don´t know that, i have my form to hide it.

Mom: When you had to go, you do in the diaper?

Ellie: Rarely i used it. When i need to go just put it off me.