He was really worried, seeing his mom slowly being occupied by Uncle Thomson and his little brother, making the originally sunny weather seem like a cloud had just rolled in.
This shows that Thomas was actually a very needy child. He also had his own insecurities, which were that from a young age, only his mom liked him. Although Robert Thomson and Mrs. Smith accepted him, he could feel that their acceptance was just for his mom's sake. In addition, his mom's heart was constantly being shared with his little brother and the bad uncle.
He was very scared, scared that one day, Tommy would become the unwanted child. Uncle Thomson, Mom, Grandma, and little brother would be the perfect family, and in this family, he would not exist.
"How could that happen!" Emma Smith had noticed her son's sensitive and fragile thoughts before, but she had no idea that the impact on him would be so great! "Look, isn't mom playing with you? In mom's heart, you are always the most important."