Oh, I don't know if this was answered yet, but Why? Why did Sidney want to become meat? There doesn't seem to be an over population issue nor was her family in debt. So was there some fundamental issue that girl meat solved or was this just fun for her? And how did she get the idea in her head in the first place?

After her conversion, the answer could simply be "because girls taste delicious." But prior to that, no one would have known.