Can a seven year old be a vegetarian???

Aliya has decided today is the day she is going to become a vegetarian. This decision of hers comes very suddenly and with the only reason being "I don't want to eat meat anymore cause meat comes from animals" I told her it is her choice, but I wanted to list all of the things she loves that is meat. For example... Turkey! She vowed to only eat Turkey on Thanksgiving and she would say a prayer for the Turkey. She also loves Bologna. I am not sure what kind of meat Bologna is, but I am pretty sure it is meat. Tonight I asked if she wanted cheese on her hamburger ( when I say hamburger I mean a bun with ketchup on it. No Meat). She said no cause it comes from a cow. I had to explain to her it is okay to milk a cow. It doesn't hurt them. It's what it was meant for. After careful consideration she decided cheese was safe. We will see how long it lasts. I have no idea where she even got the idea. I might have to make some bacon and sausage in the morning and see if she can resist. hehehe :) Oh the crazy stages a seven year old goes through.