I didn't personally know it was trending but I know that anything that has to do with her or the family usually is. This is the type of news that interests a lot of people and so it makes magazine covers and t.v. constantly. People are obsessed with celebrities.
People that contribute to society, medicine, peace etc. should be spotlighted and recognized for their contributions more so than the indulgent, "I'm super popular" types of celebrities. However, if people didn't want to see it, it wouldn't be on t.v.
There are so many more important issues in the world but maybe people aren't interested, or maybe they want to ignore it because news like this is happier.