One little girl to leave alone. Watch her eyes at the end. LOL https://www.facebook.com/video.php?v=10100807922460774
Quick guess- Walther P22 I would clean the gun for her as a reward for recognizing that the ammunition had been expended and it became tactically beneficial to discard the nonfunctional weapon quickly and increase control on the still functioning weapon. Assuming, of course, that she's already familiarized with weapon cleaning procedures and their purpose.
That kid has obviously been well trained and practiced with her .22 pistols. I figure this video was planned this way, staged. And hey that's fine. Terrific to see a young person being well taught, being safe. Got her hearing and eye protection on. She minds the directions of the end of where the bullets come out, she is checking that her guns are clear. She has constant control of those pistols, and they are clearly not too big or too powerful for her to control. She's also cute as a button! OKAY KIDS! IT'S PIZZA AND ICE CREAM TIME!!!!!