Assalamu alaikom,
My six year old likes Ben 10 also. However, like in so many cases here in Florida, what are the parents doing while their toddler is busy drowning in the pool? Everyone knows a little child is attracted to the shimmer on the water and does not understand the danger. Glad the story ended well but that kind of responsibility shouldn't lie with a 7 year old sibling but a parent in charge! May Allah make them realize how lucky they are to still have both children alive and well.