im a newbie here!

one of the children i watch during the day still wets the bed during the night, and sometimes she wets during the day. during the day i constantly on her to go potty,sometimes she goes without me asking her because we are at home but when im out with the kids,she forgets to ask because she thinks shes going to miss something. so parents please give me some insight. her mom and I think its because of her new sisters coming into the world but it could be a number of things