You did not witness this? So you don't know for sure if this was aggression or play gone bad?
I would not leave her out with any smaller dogs unsupervised. That is outside or in the house. Let her out with the larger dogs.
Dog aggression does not mean the dog will be human aggressive. I have a HA dog that is great with other dogs and a DA dog that is great with people.
However, given your household with other small dogs, I would look to rehome her. You could contact rescues to see if they would courtesy post her and help check references for you.
Seger vom Sitz von der Hose
Forever loved and missed.....Banshee