I need help for "How to Read Literature Like a Professor?" by Thomas C. Foster

Question

I am doing a chapter from the book called Nice to Eat You: Acts of Vampires

Basically this is what I got from the chapter :
1.Literal Vampirism: Nasty old man, attractive but evil, violates a young woman, leaves his mark, takes her innocence
2.Sexual Implication- a trait of 19th century literature to address sex indirectly
3.Symbolic Vampirism: selfishness, exploitation, refusal to respect the autonomy of other people, using people to get what we want, placing our desires, particularly ugly ones, above the needs of another.
4.The vampire is not necessarily a classic vampire, with fangs and a long black cape. A vampire is any character that serves the purpose of attempting, and often succeeding, to remove the life and vitality and spirit from another character.
And so for an example from another passage I was going to choose the Scarlet Letter or A Raisin in the Sun and explain how it relates to this chapter.
The trouble I am having is finding a "real life" example of this. Please Help Me.