Kavya is definitely Adi's guiding light.. Adi was lost for a really long time about what he want to do in his.. Somehow requesting to help her Kavya showed that Adi really have a passion for writing and helping others..
Indeed Adi is Kavya's saviour, at every obstacles and danger Adi was there to save Kavya.
Now it will be interesting to see if Kavya will be able to save Adi from Jail time by solving the murder case like she did in Rajiv Bansal's case.