I'm not sure it is correct.please help me to revise.
Mrs. HG put out her hand and touched Mr. Karl’s arm with great gentleness, as he knew just how he felt. She spoke as if he did not want to cause him any more trouble. She said: if you will just listen to me before doing anything. Her voice is cold and she turned her head away as if she had said too much already. Then she looked Mr. Karl again with pleasant smile and asked: “what do you want to do Mr. Karl?” “I was going to meet the cop that I was I should do, called police.” She answered: “Yes, I think so. It’s not for me to say because he is my son. Yet, I sometimes think a little good advice is the best thing for a boy in certain time in his life. Mrs. HG looked like a different women to her son……
there she was with a gentle smile saying,
"I wonder if you don't think it would be better, just let him come home with me. He looks like a big fellow, doesn't he? Yet, it takes some of them long time to get any sense into their hairs."
Mr. Karl had expected X mother to come in nervously, shaking with fear, asking with wet eyes for mercy for her son. But no, she was most calm and pleasant, and was making Mr. Karl feel guilty. After a time, Mr. Karl was shaking his hand in an agreement with what she was saying.
"Of course," he said, "I don't want to be cruel. I'll tell you what I want to do. Tell your son not to come back here again. And let it go that. How was that? And he warmly shook Mrs. HG’s hand.I will never forget your kindness.