i think bani is being threatened by ranveer.
she ofcourse knows about ranveer's plan and is asking for allimony to save jai's property from ranveer as MTs khabari said.
but why would she have to be mean to jai, especially talk abt an abortion. i think she is being mean coz she knows that jai loves her (remember when jai told ranveer that if bani asks for 1 part he will give her 2....how bani suddenly raised her head) and so she thinks that the only way to get jai to hate her and sign the divorce papers is by being mean to him. and when she said ke woh "yeh sab apne bachche ki bhalai ke liye kar rahi hai" what she means is that by saving jai she is saving her child's father....so in a way she is helping her child.
don't know....i'm just guessing things.