The thing I like about this story is that I think it happens to a lot of people.
For example, my mom is now on Facebook. She’s been wanting to see all the photos her family posts. That’s really the only thing she’s interested in: photos.
I helped her create an account. Now, since she’s new, when she uses her account there are constant “do you know these people?” messages. Facebook is encouraging her to add people to her friends lists. BUT, I explained, just because you know someone does not mean you want them as your Facebook friend.
I suspect that many unwelcome friend requests are a result of Facebook prodding users to add everybody they’ve ever met, including your coworker’s 14-year old daughter.