Breaking up a dog fight is frought with all kinds of serious concequences/
Being someone that raises terriers,she should have known the best way,to deal with the situtation.
But it it goes to show when it is ours we lose our objectivity.an d just jump in.Not the wisest thing.
It would be very difficult to remain calm,for most people.
When I was raising dogs,(back when I did) there was always a bucket of water,or a hose avaiable,even in the house,so things get wet everything is washable.and dryable.
I feel bad for her though,a lot of trust has been destroyed.and will have to be re established.
Tricia and the fur kids