Question about Sara. (SPOILER)

She didn't die. In this movie, Eric and Sara were planning to leave Freya until she caught them. She said they could leave if they make it back to eachother, and then makes them battle their fellow Huntsmen. They beat them and run to eachother. Freya throws up an ice wall to stop them, which divides them. Through it, Eric sees Sara being killed by another Huntsman. He is knocked out and thrown into a river.

The events of Snow White and the Huntsman happen, with Eric telling the comatose Snow White about losing Sara.

Then, we're back to The Huntsman movie. Eric meets Sara again, and is shocked to find her alive. At this point, we find out that when Freya threw up the ice wall, she created misleading visions to turn them against eachother. For Sara, the vision showed Eric abandoning her - which isn't true. For Eric, he sees Sara being killed. This way, Eric is a broken man and this is Freya's punishment for falling in love. Sara is now completely on Freya's side as her Huntswoman with her heartbroken by Eric's supposed betrayal.

In SWATH, as Eric and Finn are fighting their final fight, Finn tells Eric as he captured Sara that she had a lot of fight in her, just as Eric did. He then stated as he was about to kill Eric, Eric could now meet her "in the other world," and apologize for having not been there to save her when Finn (the implication being) captured and took her to Revenna where her youth was (presumably) drained. Since she was now "in the other world," the inference was she had died.

As Snow White lay still in the duke's castle, Eric tells her he once had a wife, "Sara was her name," but he took his eyes off her for a moment and she was gone. When THWW goes into its sequel mode, i.e., post SWATH events, no mention of any marriage ever occurs. The writers for THWW decided to ignore what transpired in SWATH regarding Sara and Eric, and present them in an entirely new reality.

Rest in peace, Roger Ebert. You were the best.