What do you make of this? Is it favortisim?

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My mother-in-law, gave her grandson a blue light on the front of his gift for Christmas. It was connected to the wrapping paper. While me and my sister-in-law sat in the front room talking, my mil was busy wrapping up the gifts in her bedroom. So, when my mil came out of the room with the wrapped gifts in her hand, she gave mines to me for my son and daughter. My son's gift did not have a light on it. My sil turned his gift over and asked me, if I had a light on his gift as well as her son had on his. I told her no. My son did not have a blue light on his gift. At that moment, I didn't thought nothing of it, but after a while I felt bad about it. My mil made me feel that my sil's son was much more important than my son. I know that this sounds immature to be thinking about this. Well my mil has a reputation of being very mean to me. She has insulted me and belittled me in the worst way that you possibly can think of. She would come and tell me mean things that her friend would say about me. She made me feel so bad. I believe that she enjoyed hurting me the way that she has. There were times that I would go to bed at night crying, because I wanted this woman's acceptance. I loved her son. I was in so much pain with all the horrible things she has said and done to me. I almost lost my self-esteem because of her evil intentions towards me. A part of me felt that she was trying to give her other grandson the best gift, which was the light on it. She instead gave my son the gift with nothing on it. This was no mistake. She had every intention of doing this. I don't know why, when she goes so crazy over my son. My mil is a very confusing person. She will do harm to you and when you go to ask her about it, she will act like she don't remember or can't recall what she did. What do you think?