She's been upgraded from critical to serious, but is still in a medically induced coma at Loma Linda University Children's Hospital. Earlier this week, doctors said they were optimistic.
"It's too early to tell, when you're in the ICU you try not to predict things, you take it one at a time as they come along, and hopefully she makes it through," said Dr. Jim Eguchi.
The dogs who mauled the girl and two of her siblings will be euthanized at the end of a 10-day quarantine period.
Police say two of the victims are already out of the hospital.
"Sad, it's very sad, it's tragic, and I can't speak for them because it happened to them, but I just hope it doesn't happen to anybody else," said Fontana resident Roy Montanez.
At Citrus Elementary School, not far from the scene of the dog attack, several students attended an assembly on animal safety, an event scheduled specifically because of what happened.
"Dogs can be unpredictable, they all have teeth, they're capable of biting, so it's important that children learn early on to be safe around animals, especially stray dogs," said Animal Control Officer Jamie Simmons.
Animal control officers say if an aggressive dog charges, don't run away, just stand still. And don't make eye contact with the animal.
As far as the dog's owner is concerned, Fontana police say he'll certainly be getting a citation because he had too many dogs in his yard. And he could be facing much more severe criminal charges, depending on the extent of the 5-year-old's injuries.