Hilary's Necklace

Find Hilary's Necklace, and return it to Hilary in Lakeshire.

My friend Hilary lost her necklace, and we can't find it. We've been fishing all day right here, and we looked around here already. The only thing I can think of is that it fell into the lake. Our parents don't want us to swim in the lake... my mom says there's some mean things underwater, but you look like you aren't scared of mean things.

Could you find it for her, please?