The landowner may be kin to the dwellers but she better understand that she is liable for damage especially if you have records showing she was informed of the problem. Sounds like you are doing an excellent job of creating a paper trail which will pay dividends if the situation were to escalate with the dogs or neighbors for that matter.
Yes, the paper trail is growing. It was made clear to me at the Sheriff's office that I stand on very firm legal ground. The iPhone camera is always set to "on" whenever I go outside. My headphones are always around my neck in case all else fails and I use my Alaskan.