Well Bajaj's Maasi and Tanvi are some kind of mean girls
They were sleeping or Bajaj did sent all of them including his kuki out of the country and married Pre with a purpose.
Maasi is planning to push Prerna down d stairs and in Basu Bari only Bajaj knows she is pregnant.
Prerna does not have anyone for support in that house except Kuki, is d pregnancy track leading to Pre loosing her unborn child.