Although I haven't seen the episodes, from what you describe I do think it still sounds normal for the introduction of a new dog - knowing that not only does Abby need to establish her boundaries, but Murphy also needs to get it that the puppy-in-the-face isn't acceptable... and if he isn't doing that Abby is stepping up her efforts in making it clear to him where those boundaries are.
It sounds harsh but it may be necessary for Murphy to get a little (emphasis on the little) injured before he does get it. And I think the key is to make sure that they are supervised closely when together, and also work not just on stopping Abby from reacting overly aggressively, but also work on trying to get Murphy to understand from you and not just from Abby that he shouldn't be in her face in the first place.
We had a bit of this with Buzz's arrival - although he is well past puppyhood (2 and some years old), he obviously didn't get the in your face stuff out of his system when he was a puppy and he therefore did a lot of it when he arrived. Moosie just let him do it and therefore Buzz still does it to him now - he is usually attached to one of Moosie's real legs, gnawing at it, unless we tell him not to. Booker would correct him firmly but he seemed to listen to her - but then again I think he decided early on that she was his surrogate mother! Popcorn's response was more like Abby's - she would start to snarl and try to snap at him and therefore we focused on making sure they were supervised, and also tried to stop Buzz from bugging her before it even escalated into something more serious. We would correct Popcorn too if it got to that - but put the emphasis on trying to get Buzz to back off first.
I have my fingers crossed that you can work this out - Abby sounds like such a great dog and I do think this isn't ENTIRELY her fault...
It sounds harsh but it may be necessary for Murphy to get a little (emphasis on the little) injured before he does get it. And I think the key is to make sure that they are supervised closely when together, and also work not just on stopping Abby from reacting overly aggressively, but also work on trying to get Murphy to understand from you and not just from Abby that he shouldn't be in her face in the first place.
We had a bit of this with Buzz's arrival - although he is well past puppyhood (2 and some years old), he obviously didn't get the in your face stuff out of his system when he was a puppy and he therefore did a lot of it when he arrived. Moosie just let him do it and therefore Buzz still does it to him now - he is usually attached to one of Moosie's real legs, gnawing at it, unless we tell him not to. Booker would correct him firmly but he seemed to listen to her - but then again I think he decided early on that she was his surrogate mother! Popcorn's response was more like Abby's - she would start to snarl and try to snap at him and therefore we focused on making sure they were supervised, and also tried to stop Buzz from bugging her before it even escalated into something more serious. We would correct Popcorn too if it got to that - but put the emphasis on trying to get Buzz to back off first.
I have my fingers crossed that you can work this out - Abby sounds like such a great dog and I do think this isn't ENTIRELY her fault...