Near the end, somebody is thrown off a rowboat into the lake. I think it's her father. Why does she still love Peter when she knows that he was bitten? She said she would wait for him. At the very end, a wolf is shown, is that supposed to be Peter?
shareshulma2002 writes: "I think it's her father."
Yes. They fill his body with rocks before throwing him into the water. In one of the versions of the fairy tale, the wolf also has his body filled with rocks and sewn up. The wolf then drowns when he falls in a well or pond.
"At the very end, a wolf is shown, is that supposed to be Peter?"
Yes. I think Valerie even smiles at him.
"Maybe it's another dimension. Or, you know, just really deep." --Needy
If I am remembering correctly, the woodscutter cut open the wolf while he was sleeping so Granny and Red can escape (...yeah), and then they filled it with rocks for the heck of it. The wolf died because, yeah, rocks in tummy.
Valerie was mad at her father because he just killed his sister and grandma for no reason (he said he killed Lucy because he couldn't control his rage after discovering she wasn't her biological daughter, hurt Valerie's mother for her betrayal, killed Henry's father for revenge, and her own mother so she wouldn't tell... dude had some issues). Maybe she would had reacted differently if he had at least acted like he was truly sorry for killing their whole family.
Peter came back for her, as he promised, after learning to control the beast. Valerie would probably join him as a loup-garou and embrace the beast within her, in her own terms, away from society.