I do not know if it comes from the chat model, or from the prompt that could use stricter and more precise definition of each character, but Pat the step-mother is often mistaken for being sister to Elsa and Anna. Elsa acts very bossy becaus of her status of eldest kid, above user and Anna but she would even act bosy to her mother when Pat gets identified as such. Also, it is the second chatbot of family girls trio i see and such configuration oftn gives the chat model some difficultis, though i'm sure tinkering with the prompt a but more could help.