Serena, you'll love this one! When my first German Shepherd, Purdue, was a pup, he lost his first tooth in my 6 year old (insufferably bratty) little sister's white sweater. There was blood down the white sweater arm, and my Mom, who was still a little freaked by German Shepherds, just knew he'd bitten her Precious Baby. When I got her calmed down and had her pull my sister's sweater off and showed her that there were no bites, Mom didn't quite know what to think, until Purdue came over to see what all the uproar was about and opened him mouth wide in that typical German Shepherd puppy-grin and there was that gap where his baby-canine had been, still bloody. Mom looked in the sweater and found the tooth and felt pretty silly.
And no, it's no fun to have a four year old bawling and screaming for ANY reason! But it was sweet that she was so worried about her puppy's well being and future ability to eat. I've found, though, that when a child is hysterical about something like that, first you realize that you can't reason with them, then, if they see that you're not worried and even laughing a little, it reassures them that maybe things aren't as bad as they thought, and being curious little creatures, they want to know what you're laughing at.
Just think how much you're going to enjoy telling that story on her when she's a teenager! (heh, heh, heh
)