So, the book is written by a man who used to be a vampire. Blood is presented as a strongly addictive substance with effects similar to cocaine…powerfully attractive. His comments throughout match up well with my experiences. This is practical information.
Interestingly, the strong Morman roots of the Twilight saga are more problematic than the vampires themselves.
Consider this research to add reality to your books. If we take out the Hollywood, evil is truly nasty. We have to learn to avoid the PC euphemisms and share the truth in love.