When I started looking for how to help DH for dealing with his mother's finances I looked on line searching for how to locate an elderly parent's accounts and assets, I found nothing helpful for us. The advice given on the eldercare, retirement, and authoritative sites was to talk to the elderly parent and make a plan with them.
That's great if you have one of those Hallmark Card families where everyone is open and honest and not suffering from dementia. It is even better if you 're not dealing with step-parents who don't trust you or even like you and think it's none of your damned business. It is horrible to say, but thankfully that step-parent is dead. But that step-parent is the reason why we could have never ever had a nice little heart to heart sit down to "make a plan" regarding their finances and the future of my mother in law's care. It was never going to happen. My mother in law (MIL) has since had a stroke since her 2nd husband's death and among her other health problems her memory is not so great, so even approaching MIL about her finances since the death of hubby #2 (aka the step-parent) is a no go, 'cause she doesn't remember jack.
So MIL can't remember what accounts she has or had, or what accounts she and her 2nd husband had... I should note 2nd husband was a paranoid nut, so he probably hid money somewhere. So now what? I starting looking at divorce websites. Now Google probably thinks I want to leave my husband, I don't. But I thought, okay who would be looking for hidden assets? Divorced/divorcing women. I learned something, those sites saying they can find accounts may not be all that they are cracked up to be. It will cost some real money to locate assets and I don't think MIL or 2nd husband had that much hidden away.
All this has me worried about taking care of an aunt who is the same age as MIL. Auntie is relatively healthy, active and fiercely independent. I have dropped hints that she should have a plan for when it is time for me to care for her. I've gotten the 'none of your damned business' vibe from her. She is of the belief that one day she'll be active and running around and then the next day dead, no nursing home, just in her condo with stairs and then in the ground dead. She's fine with being dead, she's not too keen on being frail and having to have long term care.
I am still looking for advice for dealing with our situation for something that looks like our family.