Your Comment: “The correct word for the allegedly female student is not “slut” as there is no evidence she is selling her sexual favors.”
The term “slut” does not necessarily imply ‘services for hire’.
“Slut or slattern is a term applied to an individual who is considered to have loose sexual morals or who is sexually promiscuous.”
http://en.wikipedia.org/wiki/Slut
“a promiscuous woman;”
http://www.merriam-webster.com/dictionary/slut
The female under discussion could be an inexperienced virgin, and still be a “Gimmie Pig” because she wants someone else to assume responsibility for the costs of equipping her for sex.
“Gimmie a freebee” is what makes her a true Gimme Pig.