The jungle across the street

So.. the lady across the street has run into some bad times. She is not well. She was the foster parent for the local pet shelter and she had way to many dogs and kids at her house. Well, this spring all the kids and the dogs were taken and now she is there by herself. She has decided not to cut the grass. Well, if you know anything about where we live, we have had some rain. Like Noah rain. 40 days and 40 nights of rain. So.. Her grass is way long. Like a jungle. Yesterday I took Newell outside and asked him if he thought anything looked odd. Looking across the street, I asked him if he thought maybe cutting this woman's grass might be in the best interest of the neighborhood and as a by product we would be helping her. He agreed, but only the front yard, not the back.. Why?? Well, it is so long in the back that he is afraid there are animals living back there and he doesn't want to break his tractor. I guess I can agree, but at what point does the back yard literally take over the house, and than what???