My mother with undiagnosed dementia (plus other mental illnesses?) keeps reporting false accusations about me to the sheriff...what do I do?

Keep records -- anything written or spoken. I recently discovered my phone has an app called Voice Recorder. I turn it on now when I think I something might be said that I may need someone else to hear later. I just turn it on, lay my phone face down with the mic pointed in the direction of the person I am recording and just let it go until that person is done. If nothing has been said I might need later, I simply delete it.

Can she be Baker Acted. She seems a threat to you. You have proof that there is something wrong with her. With the numerous calls to Police that are unfounded, I assume, can't the Police take her for a Psychic eval?

I think APS may be a good thing here. If its found she can't live alone, let the State take over her care. Things will get done faster.

I'm so sorry you're tangled in this awful and complicated situation. You've done your best. Now you need to extricate her from your life while trying to get her some care.

(Assuming you're not her PoA...)

#1: if she threatens you physically call 911 immediately (and video her threats if at all possible). Do it regardless of whether you think she will carry it out (or is even capable of carrying it out). Let the responders know her history of mental illness and possible dementia. When she's at the hospital try to get the hospital to perform a cognitive exam and check for a UTI if at all possible. Contact the discharge staff and social worker to let them know she is an unsafe discharge and due to her threats you'll be filing a police report and she can't return to your home. Make sure they understand that you're not responsible for her or her care -- the hospital will go into overdrive trying to get you to accept her back, even promising to provide some of the care).

#2: seek a restraining order

#3: start eviction process (she can then be escorted out by the police if she refuses to leave at the end of the 30 days). Make sure there's someplace for her to go (like Section 8 housing or a shelter) or it will boomerang back to you. A restraining order will enable you to call police and have her escorted away if she wanders back.

#4: report her to APS as a vulnerable adult. Eventually they may be able to acquire guardianship of her and will take it from there.

It's brutal to have to go through this with a family member. Maybe other forum participants will have alternate suggestions. I wish you all the best and peace in your heart no matter what transpires.

I would apply for a TRO. Usually when there is a history of police calls, a top priority is to get the parties separated temporarily.

Once she's out, she's out. Fifteen years ago is not charity anymore, nor is it her house anymore--just like all the houses you have ever sold. You just tell these social workers "unsafe discharge."