1.We could demonstrate our love to our parents by obeying their instructions and also by doing things that please them, for example, doing well in school.
2.It is only natural for any mother to love her children. Mothers, I guess, have gone through pain and suffering to raise her children, as well as giving life to her children. Therefore, it would be easier for a mother to easily love her children. On the other hand, a child never had to suffer or to sacrifice for their mothers, and that is why I think that it is much harder for a child to love his/her mother as much.
3.I think that the best title for the 1st video is 'The boy who realized that his mother loves him'. And the title for the 2nd video is 'The father and son'.