Beekissed. I know that will be a sad day for you. But you must think in reality here, put that human emotion aside. I agree with you 100%. There is something brewing within your pooch, and it is not good. I don't know her age, but the time has come. If she is becoming aggressive like she is, then she must go to a happy place, where that aggression has been left behind in her earthly body. It will be a very hard thing to do and will break your heart in two. I have been there, many times with dogs, and my heart is still broken.
Last fall we had to put down my beautiful Keesha. She had become stone deaf, she was 14. I fell over her one night because she didn't hear me to move, she was black as the blackest night. It was only time before she was run over by a car, eaten or maimed by a bear or coyote, and that would have been horrible vet bills or whatever. She is in that happy place now, and she can hear. My girlfriend thought that I was ruthless and cruel to put her down, she asked me what would I do when my Husband became completely deaf. Hee, hee.......I was and am still very annoyed with her for these nasty thoughts to me, and there was a breakdown in our relationship it hurt me so badly. She was the one that carried her great big Belgian Sheppard up and down the stairs to go to the bathroom, until he finally died in her yard. I don't go that route at all, her and I are on different plains for surely.
Good luck with what you have to do, it will be a sad day, but you must protect everything within your life, it may be one of the children next.....have a beautiful, greatest of days, keep that chin up and be strong, and think logically. Cindi