Been there, done that. I've always been straddling the grave.
Except for half to one son of 20%, she inherits the rest or already owns half of the bulk of it in a joint account and gets the rest at a new cost rate! Other assets in a trust to her or, the car, jointly registered. Unless Trump gets us into a nuclear war or all out trade war, and even then Bidu and TSLA, constituting a whopping 62% of our assets, might be sufficient hedge and she doesn't have to work. Every time I pay a bill, she now learns how to do it, and other safeguards in place. (Her mother in Thailand frequently prays for and gives offering to the stock market's rise.) Do you smell the incense?
I think you do.
Also, as a hedge, she nags me about diet and exercise so much that I often introduce her as my significant mother. Today, for example, she ordered me (lied about the tone) downstairs to put her wash in the dryer, just so I'd go up and down the stairs another time.
I suffer great elder abuse in this paradise time of my life.