Yesterday, mom had a talk with me after dinner. She complained of some unsatisfaction with my sister to me. Because my sister didn't send her a gift to her after a trip.She said that she didn't really want the gilf but the care . I listened to her and didn't agree with her. I felt my mom like a child who wanted to get a present from parents. I said to her that my sister might be busy with taking care of her childen and forgot to buy some prensents. It was also that my sister had no ideas of the presents but that didn't means she ignore you.My mom just said she always forgot and be disappointed. I had no ideas of my mom and was angry with her. At last mom had no words to me. I thought i hurt my mom and felt sorry to her. In fact i didn't in her side. That's not fair.No matter what i have to say sorry to my mom.