Agree with every detail that u have pointed out..
I think here Anjali is being very tricky..her blurting out the divorce thing in front of outsiders was as u mentioned to save Astha so that Aditi wont harm Astha for the time being..Apart from that I feel Anjali also wanted to know NA's view about the divorce issue after Astha caused so much insult to NA..as NA comes to his real self in front of Anjali only..so she was happy that NA didnt want the divorce..My view..