A letter to an old friend.(Please feel free to correct me)

How are you? We haven't been hearing heard  (Usage of simple past tense "heard" will suffice as you already mentioned a time frame (for years) from each other for years. I miss you very much and think of you from time to time. I have been wondering how have you have been doing? Are you happy? Are you get married? But However, I got have no answer. I tried very hard to contact you. find you out. ("find you out" has the connotation of investigation and searching for someone who may be hiding.) I asked every friend of yours if they know about your life or whereabouts."what happened to you?" A big "No" was all I hear. Then I realized something awful had happened (The past perfect tense is to indicate a comparison between two past verbs. "happened" happened earlier, thus we use "had happened". realized" happened later.) to you. You chose (Your friend "chose" in the past to become a hermit. You use "chose" not "choose".) to run away from your friends, from this world, hidden in a secret place to heal yourself. I understand that, but I am also very much worried about you. very very much.

Years passed by. I strongly believe that you must have recovered from your nightmares and found  find your own happiness. But However, who knows? I've heard that God will hear you and send your prayers to the people you prayed for if you pray with sincerity. It's nonsense, right? But However, I kind of believe it. Therefore, I pray for you. May Heaven (proper noun) shower down blessings on you. May Heaven let me rejoice to hear from you and rejoice!

Sincerely yours,

Elaine

A letter to an old friend.(Please feel free to correct me)

Hello Elaine, very caring email, and I hope you get a positive response. I didn't correct this everywhere but please don't forget to put a space between the period at the end of the sentence and the first word of the following sentence: "A big no was all I hear. Then I..."