Mauli ke ghav to bhar Gaye ishaan ke pyar or waqt ke sath, mishti ke ghav pata nai kab bharege.
Matter was not at all about ishaan and choti si baat was not about cheating or leaving pregnant wife.
She has decided not to do job and want to become housewife just because of fear that working woman 's husband can leave her for other woman because she can't give her all time to her husband.
Today she said her mother was perfect in her job and personal life still her father left her mother.
That choti baat was about TIME which she thinks was choti se baat and created drift in between her parents
If we look it as per HER WORDS than she has analyze her parent's divorce reason correctly.
Sadly as pari said today , woh past unke present or future mai hamesha rahega and giving pain to both the girls.