After 21 years of marriage, my wife wanted me to take another woman out to dinner and a movie. The other woman my wife wanted me to visit was my mother, who has been a widow  for 19 years, but the demands of my work and my three children had made it impossible to visit her often. That Friday after work, when I arrived at her house, my mother waited in the door with her coat on. She had curled her hair and was wearing the dress that she had worn to celebrate her last wedding anniversary.  We went to a restaurant that, although not elegant, was very nice and comfortable. My mother took my arm as if she were the First Lady. During the dinner, we had an agreeable conversation, nothing extraordinary but catching up on recent events of each other's life. We talked so much that we missed the movie. As we arrived at her house later, she said, "I'll go out with you again, but only if you let me invite you." I agreed. A few days later, my mother died of a massive heart attack. It happened so suddenly that I didn't have a chance to do anything for her. Some time later, I received an envelope with a copy of a restaurant receipt from the same place Mother and I had dined. An attached note said "I paid this bill in advance. I wasn't sure that I could be there; but, nevertheless, I paid for two plates--one for you and the other for your wife. You w ill never know what that night meant for me. I love you, son." At that moment, I understood the importance of saying in time 'I love YOU' and to give our loved ones the time that they deserve. Nothing in life is more important than your family. Give them the time they deserve because these things cannot be put off till some "other" time. What can we know about the author's mother according to the passage?
She wanted to celebrate her last wedding anniversary. She wanted to invite her son to have dinner again. She died of a massive heart attack very suddenly. She wrote a letter to tell her son about her illness.