I absolutely hate chihuahuas! We had one living down the street from my family when I was a kid, and you couldn’t even walk outside without it going after you. I literally would have to jump on the hood of a car to get away from it.
It went after my Mom once and caused her to fall and hurt her knee. She sued the owners and won. They knew the little S.O.B. was nasty and did not keep it safely in the yard and away from people.
I really have to wonder what was going on with that dog to cause it to go after that little girl. There has to be more to this story.
I shouldn’t jump the gun and assume it is the dog to blame.