This may sound harsh, But I adopted an old three-legged black lab that was dropped off on my farm by unknown person(s). It acted fine for a couple of weeks, then one day I walked out of my home and watched it attack and kill a chicken I had, then another one after that and then a third before I could stop it. Needless to say it was his last day moments on earth.
Then two weeks later I found out that the same dog had mauled a 9-year-old boy two counties away from my farm when the ass hole who dropped it off at my farm originally showed up in person with papers from the court and humane society demanding the dog be put down. I walked the ass to where I buried the dog and said dig it up and take it with you if you so desire. I gave the idiot a signed note I had it put down with my address and phone number to give to the court. The court staff called me a week later to want to schedule coming out to see if it was really done. I said bring a shovel and since the thing has been in the ground for a month bring masks for the Oder and that somebody needs to reimburse me for my livestock losses, so bring a check book too. Then they said they would consider the case closed and no need to come out.
So, once a dog attacks or kills and learns it can and gets away with it, it will do it again, and I would tell your friend not to bring a new dog home with her, so it won't get killed.
