Last night, I received the call from my friend's secretary noticing that his mother died.

=> Last night, I received a call from my friend's secretary informing that his mother died.

I was shocked and sad because I have wanted to meet her before her last day and prayed for a long time to let her have a faith towards Jesus Christ.

=> I was shocked and sad because I've wanted to meet her before her last day and prayed for a long time to  have a faith towards Jesus Christ.

When I was a student, I stayed at my friedn's home and she always kindly treated me at that time

=> When I was a student, I stayed at my friends house and she always treated kindly  at that time

giving nice meals, cookies and icecreams at that time.

=> giving nice meals, cookies and ice creams at that time.

I have wished repay her hospitality even after I became adult,but I couldn't find proper time

=> I  wished I could repay her hospitality even after I became adult, but I couldn't find proper time

to express my gratitude to her. How lazy and silly I am!

=> to express my gratitude to her. How lazy and silly I am!

With so much regret and grief, I will go to a mortuary this afternoon, but I am sure what can I

=> With so much regret and grief, I will go to a mortuary this afternoon, but I am not sure what can I

say before her death. I deeply recognized again that Time and tide waits for no man.

=> say before her death. I deeply recognized again that time and tide waits for no man.