Sorry for your loss.
When I was younger, My Father told me, "there is no money hidden in the house,
so don't be tearing the house apart looking for it".
I always appreciated knowing that.
Nothing more frustrating than having to waste time looking in every hiding spot for cash.
Well, he passed away and that left dealing with my Mother, and she did hid money.
Not only that, but she was becoming a hoarder.
Only good thing about having to look for money is when you find it in an envelope, you know exactly what's inside without opening it.
An envelope of money has a reeeal nice feel.
I also suggest, don't deposit it in a Bank.
BUT, in settling an Estate and dealing with Beneficiaries, Go by the book / 100% honesty.
Also important is keeping accurate records.