Another thing actually Malhar has never done is sabotage Kalyani's education or career. CVS keep showing even now through Anu's dialogs that Malhar cares about her career. So I don't feel that has changed either.
yeah, this we could clearly see in that epi when he was shocked by her decision and went behind that guy asking him to stop for a sec.
now to see there is no need at all for kalyani to resign as malhar knows the truth of mukku.
so in future, if sarthak targets her professional life he will save her job.