Today was the court hearing (with jury) for guardianship of both parents. DH was awarded full guardianship of both.
MIL fought the process - hired an attorney and got a second neuropsychologist report. It stated even stronger than the first report that her dementia is an issue, she's got short and long term memory issues, and that there are some cognitive issues.
MIL is sad, angry, upset. But at least we can get some structure in her home (in home help for now) so that she can live independently in her home for now. The dementia has progressed a bit over the last few months... so there is likely to be assisted living in her future. But in home help will hopefully take some of the burden off of the sibling that lives in the same city.
FIL will remain in the nursing home he went to when DH got emergency guardianship.
We'll be able to get a better idea of their finances and make sure the medicaid spenddown is handled correctly.
I hope, with time, MIL will accept that DH and his sister have good intentions and are trying their best to be good children and caretakers.