Easy answer: it's not.

You probably /think/ Twighlight has nothing to do with your job, but in a fashion similar to Mr. Miyagi's training in Karate Kid, you'll come to realize the many parallels between bank telling and being a stalkery vampire. Pretty soon, commands like "watch Bella sleep" or "sparkle in the sunlight" will be the equivalent of "wax on" and "wax off" to your bank telling endeavors.

Edward is a creep, the relationship between Edward and Bella is unhealthy and the writing sucks, so no.

I'll save you the trouble thwy aren't

Just tell him the series is about an incredibly old man trying to seduce a teenager, I think that should be enough for him to decide his daughter is never touching those books.

I would say no. That is not part of your job and I would go to HR about this.

It really depends on how old his daughter is though.

Not sure why OP's boss doesn't just look up some book reviews. My guess is that the boss is just playing a prank on OP to see if he'll read it

Your taste in books is horrible. #sorrynotsorry

There's this thing called Google, and it knows all. Ask Google, or to put it in understandable terms, Google it. I'm not affiliated with Google in any way.