Mommy or Human?

While I was cleaning up dinner, Rachael announced, "Next, I'm going to be human."
"What?" I asked. She hadn't said or done anything to prelude the "next" part of her statement.
"When I'm done being a mommy, I'll be a human next," she answered.
Curious, now, I asked, "So, a mommy isn't human?"
"No," she said in a tone of voice the denoted, "Duh!"
"Oh," I said, "If a mommy isn't a human, what is she?"
Her brow wrinkled down in frustration as she said, "A mommy is a mommy, not a human."

well..... ain't that the truth.