MemberSince99 wrote:But can anyone think of anything I have overlooked?
Not knowing where you live, the size of the community and/or the police department there, you're options could include:
1 - Call the police...again. But ask for a supervisor. Usually a Sergeant or Lieutenant. Explain the situation to him/her and ask for advice. Tell that person you are not satisfied with the previous calls for service and the outcome. If this neighbour has been continually coming on your property when told not to, not only is this trespassing, but it is also harassment. If she is taking items off your property, that is theft. The police department should take your complaint. If they don't, go up the chain of command. Write a letter to the Chief of Police. Contact your District Attorney's office and seek advice from them, if there is no action from the police department.
2 - Contact your city or county adult protection. Just as with child protection, they are required by law in most cases to investigate all complaints or requests for service. This neighbour may have some mental health issues (yeah, I read your full post -- it's likely) and may need assistance. Or she may already be on their radar and the situation to investigate needs to be escalated. Mental Health professionals may need to get involved with this situation. In addition to calling adult protection, call your city or county mental health department, and tell them what you've posted here, and the frustration you're experiencing with this situation.
3 - A goodly number of cities/counties have a 211 resource. Dial 211, and briefly explain that you have a neighbour issue with someone who may need mental health assistance. They will likely put you in touch with a mediator and will listen to your situation and offer potential solutions; they also have professionals who will get actively involved in mediation, to the point of contacting the other party involved and finding out what is going on with that other person. They may also be a resource to get adult protection involved.
4 - Go through the court system and get a restraining order on her. I'm surprised an attorney did not offer this suggestion to you. Have her restrained from coming on your property. There will be costs involved, but it may very well be worth it to you. The restraining order will need to be served on here, which is usually done by the county Sheriff's Department, or a private process server. Once she is served (and you will get notice of service), then if she violates the restraining order, you have additional cause to call the police department.
40 years of law enforcement/pubic safety employment have given me a pretty good perspective on things one can do with these types of situations. The suggestions above may or may not work for you. But they are additional places to seek assistance.