My neighbor is in her 80s has no family and her dementia is getting worse. Who should I contact?

If you are not her PoA or legal guardian you have no power to really help her to the extent she needs now and in the future. Therefore, keep reporting her to APS and they will be able to handle it. In the meantime, you can help her with things you are willing to do and she allows. Don't do things for her just because she asks... people with dementia have broken brains so reason and logic are no longer a thing they are capable of. If she becomes delusional (or seems ill in any way) call 911.

Sometimes not taking certain prescription meds properly can result in dementia-like symtoms (eg: thyroid meds, sleeping pills, pain pills, etc).

I'm sorry you are going through cancer... bless you for caring about your neighbor. May you receive healing and peace in your heart!

Call APS in your area and report her as a senior in need. Do not enable her living in unsafe condition. You mean very well, and are kind, but you are absolutely correct when you say she needs can. The state takes guardianship of seniors unsafe in this situation.

Start by calling your local Area Agency on Aging and ask them who you should report a vulnerable, frail elder to.

They might tell you to call Adult Protective Services, or they might ring up your neighbor themselves and ask if they can visit.

No one can force her to move elsewhere unless she has been declared incompetent.