What exactly IS in meatloaf?

So, tonight we sit down to a classic Atkins style meal. Meatloaf, Mashed potatoes and veggies. It never ceases to amaze me how much guys truly LIKE meatloaf. My Daughter has an inherited fear of anything resembling anything close to red meat. Grant is skiddish, but when faced with nutter butters or nothing, he persevered through and got his reward.
Sammy, on the other hand, not so easy! SHe loves the mashed potatoes, and gobbles up her tomatoes, but meatloaf? Forget it dad! I even got her to eat ketchup, but on the tomatoes, LOL.
Finally Mike decides to put his foot down, Samantha, you need to eat your meat honey.
"NO! I don't like it daddy, i don't need it"
We are trying very hard not to laugh because her face is SOO cute!
So we proceed to try to put ketchup on it, cut it smaller fly the plane in for landing. ALl of which gets the evil eye stare, and the mouth shut tight.
Finally, mommy gets a bright idea.
"Sammy! You gotta eat your meat, it's good for princess' they will stay healthy if they eat it!"
daddy adds ....
"Yes, c'mon honey, it's princess meatloaf ..... have a bite!"
to which Grant adds in a crooning coaxing voice ......
"C'mon Mantha, It's made of PRINCESS' ! "