Dogs that attack puppies are not to be tolerated imo.And a bitch into the bargain.
I've three adult males who growl at my 10weeks old pup when he oversteps the mark, but are remarkably tolerant of him.
When I was a kid, [half a century ago,] my cousin had a lovely Manchester Terrier called Paddy,across the alley from him was a Bull Mastiiff called Bruce,
Bruce was a nasty piece of work, perpetually on a chain attached to his kennel , that chain would hold a horse ,Bruce developed a strategy of pulling the 4 foot kennel he lived in along, to get him in striking range of any unwary dog