Did she own the dogs and the dogs familiar with her or did she pick up the leash of some random dog she had never met before? I don't see a dog possibly putting its life on the line to protect a random stranger. Even the "trained dogs" seemed to be making more a of a game of the situation and only biting the sleeve, rather than full on attack. Further, she wasn't scared by the "stranger" and stood passively by as he approached her. Don't we socialize our dogs to avoid them attacking and being aggressive to random strangers? Why would you want a pet dog acting aggressively toward someone who might be an uncle or friend picking her up? If she experienced some actual fear I would expect the dog to act differently.
I wouldn't be surprised if this was a shameless plug for her father's training business.
Freyja GSD- 6/21/10
Bevin (princess kitty) 08/27/07
Porsche: kitty 7/2012
Teddy (collie)- 1990-09/13/2006
Franklin (collie) 1996-06/26/2006