She (deer) looks like she must have a baby near by to do that.
She wouldn't have stood a chance in my back yard because she would have had an a$$ full of buck shot. First a warning shot across the bow, then one in the a$$ if she hadn't left by then. Come fall she might be in the freezer with the way the price of meat is going.

Bernd
P.S. Did I ever mention how much fun a spud gun is.

Added: From what I see is a doe protecting her new born. If you watch the video you'll notice how the doe stricks at the dog with her front legs. Luckily the dog didn't get hit. And as you've said to your daughter about chasing that doe. It could have turned on her too. Those hoofs are sharp and can cause pretty bad damge.
This is what happens when wild animals become acustomed to living in the suburbs, I take it that's were you live from the video, they loose their fear of humans. Remeber Bambie isn't so nice protecting it's young, same as a human would do protecting it's offspring.