To answer your question more directly, we did a boundary survey earlier in the year before we sold. That's when we discovered that her entire 360 pounds-per-year garden near the far corner of our property was over the line. OVER THE LINE! Over the line with no tribute. Unacceptable. Turns out she had moved the property line marker to suit her needs and pretend she didn't know.
Sorry to hear about all your issues. Like a bad case of the clap, she just won’t go away.
About 14 yrs ago I had a company we were doing business with go bankrupt on a bonded government job in Miami. It was a subcontractor I was required to hire since they had a proprietary system for which there were no substitutions.
When he went belly-up, the lawyers attached all the materials—I couldn't touch them. The system was to be fabbed off site then trucked to the site. Being a Federal job, any jobsite labor had to be performed at prevailing wage (Miami scale). Off site assembies had no such wage scale. About half the wall assemblies were fabbed and ready to ship when subcontractor filed. (I found out later he was in trouble on other jobs as well) Since I couldn’t touch them (they were not usable for any other purpose), and l was forced to build the wall assemblies (casting beds, structural metal studs, rebar, concrete, forms and inserts for each wall section) at the jobsite—all at union scale for form carpenters, rod busters, concrete finishers.
This cost me about $400k over and above my contract. The sub went straight liquidation, there were many creditors and I was way down the list. Lawyers cost me $100k. Ouch.