How do I know? I just know... I can see it in the way she would play with her dolly and cradle it in her arms as if it were her baby. Sometimes, I would tell her that there's a baby inside my tummy and because my tummy looks like it REALLY has a baby in it, say around 5 months, she would kiss my tummy. Hehehe! Sweet no?
Now, if you want to see other Mommies' kids welcoming a new sibling then head on over to The Mommy Journey for lots of those sweet loving..