Most of the window seats were occupied, leaving only seats by the aisle.
Having no seats together, she got her son to sit on one side of the aisle while she seated to his left on the other side of the aisle.
The boy was seated next to a lady.
This lady helped the mom to hold her son and make sure he is seated properly. She chatted with the boy and played with him for a while. As the bus ride was jerky, she also helped to prevent the kid from falling off the seat together with the mom who was bending over the aisle watching over him.
Halfway through the journey, the mom moved over to sit besides her son before finally letting him sit on her lap.
The lady went back to looking at her iPad.