Hmm interesting post. I was actually curious how the experience would turn out. Your friend sounds like a very intelligent girl. I think it's a wise idea to seek to educate yourself on such matters. (I hate those vegetarians/vegans who just use this choice of theirs to bash any meat-eater over the head)
What happens to the animals after you kill them? I mean, the way I see it, the "cruelty" that people see lies in that, a lot (well, also in the fact people love to be judgmental holier-than-thou assholes). Because I do believe that meat-eaters who understand that killing animals for consumption is unfair and inhumane (as opposed to those who think it's just dandy) justify it by saying that it's necessary, in order for them (Humans) to be strong and well-fed.
It's a justifiable kill, in their minds, whereas they might not see the justification in what you do. Which is why I'm asking, as I have no idea what happens :) Just so we're clear, I'm not expressing my personal opinion here...
I was a vegetarian for two years, until I was about 18 or so, by personal choice and I did do a lot of research on that. I watched videos of what goes on in abattoirs particularly because I wanted to educate myself about the truth. You're right, meat comes to us in neat little packages, but wasn't always like that. And I do believe any meat-eater should watch those and should figure out if he's okay with that or not.
But the thing is, most people don't want to do that. Hell, they probably have cats or dogs at home. They don't want to accept that they, too, are responsible for the suffering of all those chickens/pigs/cows etc. As you well know, people are happy to have the veil over their own eyes, just as long as it shows them in a golden light.