Heather, played by Odessa Munroe, is a character in the film Freddy vs. Jason.
Heather makes an appearance on a dock at a lake. She turns and calls for Mike, but he never shows. After diving in the water, she's spotted by Jason Voorhees, who stalks her through the woods. He finally catches up with her and murders her.
As it turns out, she was only a dream, as Freddy Krueger is trying to manipulate Jason to go kill people to make people afraid of Freddy so he can get his power back.