in short ragini has absolutely no expectations from aman..if he does something or not you do not see her reacting much ..but with nachiket her every reaction is proportional to his action...he affects her like nobody does and yes she lives when with him otherwise she simply breathes...
ragini can never let go of her family and aman can never be part of that family..he actually is so blinded with his fairy tale that he refuses to see what is right before his eyes...and yes it does not make much difference to him whether she eats or not or if she is too heartbroken and obliged and hence marrying him...all he cares is as long as he gets her...
and when ragini was praising aman it was not because she liked him but because she was angry at neil for everything ..we all do that when in anger...tumse toh accha woh hai atleast aisa toh nahi kehta or kartha something ...
nachiket had done it when he was angry at ragini and compared her to nivedita as a mother...it was not because he even cared two hoots about nivedita but coz he was angry at ragini for the ranbir arrest and how she let him down ...
and the last scene was the authority ,concern her love...they fight ,hurt each other but that does not stop their other emotions for each other as well...loved the ease with which she sat and ate with him so close so adorable...inspite of everything between them ,she is so comfortable around him ,with him and lets him take care of her
these are little things that shows the love ,affection and concern...ragini takes care of everyone and does not expect anything in return ...but nachiket takes care of her ,small things but leaves an impact...
ragini refusing to eat coz nachiket had not eaten ,nachiket and she sharing the food from one plate ...that is what makes them so adorable...
and aarav's reaction is quite predictable..we did not expect him to be happy and jolly when one of his parent contacts him after 9-10 months