Kelly Addams 
Naomi And The Neanderthal [EPUB ebook] 

Promiscuous Naomi has embarrassed her father for the last time, and finds herself banished to her Aunt Helga’s guest house in the Carpathian Mountains, just until the dust settles and people find someone else to gossip about. In Romania she can’t get into more trouble he thinks, but Naomi finds a tunnel in the woods, a tunnel that leads to kinky prehistoric fun!