To get on a good foot with the neighbors, tell them you have trapped and killed several mink and since talking to her the other day, you realize we can make a very good investment. Since she raises them, why not allow them to trap the mink and tame them!
Tell them you want them off your property and if they don't want to trap them and tame them, then you will continue to trap and kill them.
Just an idea and it might make the neighbors wake up.

Just an idea and it might make the neighbors wake up.