Shyam was kicked out of RM by Arnav, this was an ideal opportunity for him to walk away from Anjali and find another golden goose to lay golden eggs for him, as smooth a talker he is, but he did not,
Daadi is very adamant on reuniting Shyam with Anjali, without even asking Arnav the truth about Shyam, she is Shyam's sole supporter... for an old lady who should be wise with age, she is almost making history repeat it self, from the few FB scenes we have seen and her accusation of Arnav's mother being weak, she seems to have been the instigator in his parents death too, stemming from what may have been a misunderstanding caused by her.
Whatever the truth maybe, it will be the defining moment for Arnav to show his support for Khushi, who he has already accepted as his wife and hold his marriage together come what may and show Daadi that her misunderstaniding, misconception and foolishness caused his parents unnecessary death and he will not repeat history.