Jenna Mongomery was a character in the Friday the 13th (2009) and Clay Miller's love interest.
She can be considered to be a loose pastiche of both Chris Higgins (from Friday the 13th Part III) and Trish Jarvis (from Friday the 13th: The Final Chapter).
Both Jenna and Chris had connections to the owner of the summer retreat where Jason's killings occur (Chris' family owned the property and Jenna was the girlfriend of the owner of the summer home).
Also, both Jenna and Trish were trying to help the brother of one of Jason's victims (Clay Miller and Rob Dier respectively).
A difference between the characters would be that Chris and Trish survived Jason's rampage while Jenna didn't.
The girlfriend of Trent Sutton, a rich brat, Jenna and several of her friends accompany him to his summer home in Crystal Lake in 2008 to party through the weekend.
Stopping at the Outpost gas station, Jenna goes inside with Trent and Chewie to pay for gas and snacks and winds up breaking up a fight between Trent and Clay Miller, a young man looking for his missing sister, Whitney. When Clay goes to leave, Jenna apologizes to him for Trent's behavior.
Reaching the summer house after the stop at the gas station, Jenna leaves the others to their fun and hangs out on the porch.
When Trent comes to see her, Jenna asks if he wants to go hiking which Trent declines, obviously intent on only having sex.
Brushing off Trent's advances, Jenna, after seeing Nolan and Chelsea off to the lake with Trent, meets Clay again when he stops by.
Inviting Clay inside, Jenna's assumption that Trent won't mind is proven false when Trent angrily demands Clay leave.
Apologizing once again for her boyfriend, Jenna escorts Clay to his motorcycle and told by Clay that he plans to look around the lake for any hints of what happened to his sister, decides to go with him.
Looking through the woods, Jenna and Clay find a broken GPS and the rundown remains of Camp Crystal Lake.
As night begins to fall, Jenna and Clay decide to check one more before calling it quits.
Before they head into the final cabin, the duo spot Jason Voorhees carrying a dead body.
Hiding under a stacked canoe, Jenna and Clay when Jason spots Clay's dropped bag and begins frantically looking around for intruders, run from the canoe to the woods unnoticed by the hulking killer.
Needing to warn the others about Jason, Jenna and Clay run back to Trent's house, accidentally triggering one of Jason's crude alarms in the forest on the way.
Getting to Trent's place, Jenna tells Lawrence about Jason while Clay calls the police.
As she goes up and tries to tell Trent and Bree about the situation, she finds the two too engrossed in having sex to hear her through the door.
When Jason cuts the power and Trent and Bree finally come out of the bedroom, Jenna breaks up a fight between Trent and Clay and tells her boyfriend what is going on.
After Lawrence, Bree and the recently arrived Officer Bracke are all killed, Jenna, Clay and Trent flee the house.
As Trent tries calling for help on Bracke's car radio, Jenna tries to help Clay find his missing motorcycle keys when Jason hurls Bree's body onto Bracke's cruiser.
Jenna runs into the woods with Clay, while Trent goes off on his own. After stumbling across the dead bodies of Lawrence and Chelsea, they find the old Voorhees house.
Hearing the screams of the captive Whitney emanating from under the house, Jenna and Clay uncover and enter the tunnels below the house.
While Clay tries to free his sister, Jenna stands lookout in the underground corridor.
After Whitney is freed, Jenna tells them that Jason is approaching. The three of them run deeper into Jason's lair to avoid the pursuing Jason.
Finding a tunnel to the surface, Jenna enters it behind Whitney and Clay and, while reaching for Clay's hand, she was impaled by Jason's machete and tossed aside to her death.