She knows Jack and Amanda are in danger and grabs a boat with Nolan to find them.
Nolan races Jack to the shore while Emily heads off to help Amanda. Amanda and Nate are still battling it out when Emily joins the fight.
The fight continues until Amanda shoots Nate; effectively saving Emily’s life. Just as they are about to leave, Amanda sees that Nate is still alive down below. In his last act, Nate opens his lighter and ignites the leaky propane tank.
She finds her old friend, but it is clear that Amanda is not going to make it. With her last breath, Amanda makes Emily promise that she’ll take care of Jack and the baby. Emily tearfully lets Amanda know that she loves her, then let Amanda’s body slip away into the sea then fires a flair in the air so Nolan could bring her home.