Rose

Rose is part of the sorority who bought the O'Grady Farmhouse to save energy and go eco.

Leprechaun Returns
Rose is introduced to Lila after she is dropped off at the farmhouse. They greet each other and rose gives Lila instructs on what to do for their eco project.

Rose later meets Lila in the basement after hearing some strange noises and is shocked to find the basement flooded because of a burst pipe. Lila offers to clean the basement and Rose thanks her for her diligence.

Later on, Rose encounters an hysterical Lila, who informs them that she met a leprechaun who claims is here for his gold. Rose looking a little pale plays this off as crazy ranting from Lila. Until Meredith shows them a selfie she took with the leprechaun thinking she was hallucinating.

Rose goes into hiding after witnessing the leprechaun killing Andy with the solar panel. She hides herself in the closet in her room and encounters the leprechaun who she impales with a heel and manages to run away.

Rose is later seen getting into the car with Katie, Matt, and Meredith. Rose asks about Lila but Meredith lies and says the leprechaun killed her. They are surprised by the leprechaun in the car before kicking it out and driving off.

As they are driving Rose questions Meredith about Lila’s apparent death and is able to make her admit that she made a deal with the leprechaun: Lila’s life for hers. Rose is shocked by this and is further insulted when Meredith mocks all her hard work causing Rose to slap her and vice versa.

Eventually the leprechaun catches up on Matt’s drone and forces them to crash after narrowly avoiding Ozzie’s abandoned truck. They discover Ozzie’s corpse and take his keys but are thwarted by the leprechaun. Meredith stays behind claiming she made a deal and will be the only one to live.

They leave her and she is killed by the leprechaun. Rose, Katie, and Matt run through the forest and discover the drone and Matt says he will stay behind and hold the leprechaun off using the drone. Rose and Katie reluctantly leave him and run off deeper into the forest.

Rose and Katie later bump into Lila relieved to see her alive. Katie asks what she is doing and she tells them that she is searching for the leprechaun’s gold. They eventually find an old and abandoned truck with the pot of gold, but only find about a dozen or so coins in the pot.

Lila says although it’s a small amount they should still give the leprechaun the gold so they can live. However, Rose says they can’t because that is not all the gold. She confesses that she found the gold months ago and had sold some of it to finance the eco project.

Lila and Katie are shocked by this thinking that she has gotten the funding from her supposed successful go fund me page. But she reveals that it did not work since people didn’t really care about the environment. She said she got some money from her relative and a stranger who gave her $20 for a naked photo of her which she sent.

Rose also pulls out a journal, saying that she jotted down, how much gold she sold and how much it would cost to buy it back. When Lila and Katie ask how much gold was in the pot, she gestures that the pot was overflowing with gold coins when she found it.

Despite this shocking revelation, Lila decides to come up with a plan to trick the leprechaun and kill it. While walking home they discover Matt’s decapitated head. They also discover that the necklace Lila is wearing is made up of fool’s gold or iron, meaning the leprechaun’s weakness is also iron.

They pretend to have an argument, and lure the leprechaun into the house and return his “gold” which he starts counting. Eventually it is revealed that most of the pot was filled with tampons. At the same time they surround the leprechaun with objects made of iron trapping him.

They manage to put a hose in his mouth and fill him with clover juice causing him to implode into a million pieces. The girls believing they have beaten him celebrate, then Lila says that they have to clean every piece of the leprechaun and destroy them otherwise he will just come back to life.

Death
Rose is left with cleaning up the remains of the leprechaun. As she is cleaning, his remains starting reviving themselves as miniature versions of the leprechaun. One of them knocks down a trophy with a garden shovel on it. Surprised but undeterred she starts fending off the small leprechauns.

But as she is fighting the leprechauns, the leprechauns play around with her annoying her more and more. Eventually they cause her to trip by holding up a broom stick causing her to land on the trophy impaling her through her head killing her.

Trivia

 * She is the last person to die in the movie.
 * It is hinted early on in the movie that Rose knew about the gold due to her facial expression after Lila mentioned the gold and leprechaun.