Guys I am clearing this point to you that in this story nobody blamed kartik for akshara's accident .

Kartik - If you have work you can tell and if you don't have any work then you can Leave respectfully.
Dadi - Kittu please listen to us .
Kartik - No I will not when you haven't listened to me then why should I listen to you now Mrs. Suhasini Goenka .
Manish - Kartik what is this behaviour?
Kartik - I am behaving like you behave with naira . Mr. Manish Goenka .
Swarna - Kartikkkkkk..................
Kartik - I can also shout Mrs.Swarna Goenka .
Swarna - Now what have I done that you are calling me by my name ????
Kartik - You felt bad . Like this only I felt bad on that day when dadi and papa were insulting naira and you were not speaking anything . Even you didn't speak anything when dadi threw naira out of the house .

Suddenly naira fainted on the floor .

https://www.youtube.com/watch?v=-GHMdS65P98

(Guys I didn't get any other so I added this one.)

Kartik - Nairaaaaaa.........

Kartik took naira to hospital. While everyone else followed him . Doctor was checking naira .

Manish - Kartik naira ko kuch nahi hoga. 
Kartik - Just shut up !!! Get out from here with your mother .

But manish didn't went from there . Doctor has given permission to everyone to meet her .

Naira - Kartik ........
Kartik - Naira ........
Naira - ( pointing towards Goenka family ) Kartik who are they ???? And why am I here?? I have to go to home before mumma leaves for mandir ..

Kartik realises that naira forgot about Goenka family and she has gone to the day of akshara's accident .

Naira - Speak up kartik please tell me .
Kartik - Naira actually you are here because we had a minor accident . But everything is fine now .

Then kartik made naira sleep and after she slept kartik went to the doctor's cabin .

Kartik knocked on the door. The doctor gave the permission to come inside. After getting the permission, he came inside and stood infront of the doctor. The doctor signed him to have a seat.

Kartik - Doctor why naira has forgot about her present?? In this one month, it had not happened yet . How today she forgot??
Doctor - Because of stress Mr. Goenka . I have told you earlier also that don't give her stress . In this one month, she was not stressed so she didn't forget anything but today she was stressed so she forgot . But she will remember all things in some time .
Kartik - How much time doctor ????
Doctor - In 1-2 hours she will remember .
Kartik - Can I take her home ???
Doctor - Yes sure . And I think that if she will go to her home back she will remember all things very fast .
Kartik - Ok thanks doctor .