Dear Grandmother,
How are you? I'm doing great.
I am really sorry that I couldn't come home to visit our family last week. I understand how much you would have expected for my arrival, but i have disappointed you. I really apologize for making you feel worried for not getting in touch with you recently and, also for not informing you over the phone.
As I have already told you earlier, that my exams were going to start next month, I had some assignments to be completed which carried internal marks and, suddenly they have rescheduled the last submission date also. Because of which, I was busy and had to cancel the plan to visit home.
However, to compensate for the missed visit and to make you more happy, I have decided to apply for leave next week, to stay at our house with you. I also wanted you to confirm if you have any other plans so that i can postpone or rearrange the visit some other time. I also decided to take you out for a short trip to Rameshwaram which you had been asking me for a longer time.
Waiting to hear back from you soon. Take care.
Best Wishes,
Renuka
Dear Grandmother,
How are you? I'm doing great.
I am  
really
 sorry that I couldn't  
come
 home to  
visit
 our family last week.  
I
 understand how much you would have  
expected
 for my arrival,  
but
  i
 have disappointed you.  
I
  really
 apologize for making you feel  
worried for
 not getting in touch with you recently and,  
also
 for not informing you over the phone.
As I have already  
told
 you earlier, that my exams were going to  
start
  next
 month, I had  
some
 assignments to  
be completed
 which carried internal marks and,  
suddenly
 they have rescheduled the last submission date  
also
.  
Because
 of which, I was busy and had to cancel the plan to  
visit
 home. 
However
, to compensate for the missed  
visit
 and to  
make
 you more happy, I have decided to apply for  
leave
  next
 week, to stay at our  
house
 with you. I  
also
 wanted you to confirm if you have any other plans  
so
 that  
i
 can postpone or rearrange the  
visit
  some
 other time. I  
also
 decided to take you out for a short trip to  
Rameshwaram
 which you had been asking me for a longer time.
Waiting to hear back from you  
soon
. Take care.
Best Wishes, 
Renuka