We have an elderly relation who lives with us for the same reason and we stopped trying to take her to the grocery store a long time ago for much the same reason. She also loves to buy stuff nobody (including her) eats like chicken livers and the like and then proceedes to get upset when we ask her why she bought them if they're just going to sit in the fridge and go bad?Ha, that's totally my experience when walking with my 87 year-old mom (she lives with me due to memory/executive functioning issues). Not only does she walk very slowly when she does walk, but she's constantly wanting to stop and look at some plant or other or comment on some feature of a tree or house or whatever. I want to get from one place to the other.
Fortunately Aldi is a lot less dangerous for this crap than Publix. Never mind Walmart. Both of which she'll quite happily spend literal hours wandering around in.