Who is Vanessa from How to Make Love Like A Porn Star: A Cautionary Tale and what is their importance?

Vanessa is Preacher's daughter and Jack's cousin. She took a job at the Crazy Horse Too as a stripper, after which, she and Jenna became friends. Vanessa taught Jenna everything she needed to know to make money as a stripper. She was later found hanging from her shower door, and her death was ruled suicide, but Jenna believed that Preacher had killed her.