Not to be a Debbie Downer, but embrace and enjoy your elderly mother buying random, useless crap. My mother has Alzheimer's; she's not the same person she was just 2 or 3 years ago. She frequently doesn't even remember who I am. And honestly, I would give anything to have another Black Friday with her, waking me up at 5AM to go to Walmart so she can buy a $15 DVD player.
No, because she’s taking it from accounts she shouldn’t be. Her fixed income living expenses account. Her trust her husband left her to manage for the kids. She’s a shop-a-holic and my sister and I are wrestling power of attorney to make the bleeding stop. It’s a mess.