I’m shattered emotionally....

Three times, three bites, got to go. Best efforts aside, three escapes question what is missing on your side. Extra precautions need to be taken with a dog that will attack, and you were not able to provide that. No offense meant, but this is not the dog for you at this time, and should be put down for the sake of kids in the area. Hope the shelter does what needs to be done. I am a dog owner and understand your pain, but would not jeopardize a child's life for my pet.