i think a mistake with a dialogue?

In 9th january episode when aysha called sukriti to know what shes goin to do next, niharika picks up the phone and talks to ayesha arrogantly and ayesha talks to her calmly and sweetly and infact she calls her "niharika aunty" instead of 'mamma', 'mom' or 'sasuma' coz she's her mother-in-law.and before in those episodes where ayesha was newly married with neev she was use to tell her 'tu', 'tera', 'tereko', etc...