The things that Mum doesn't do

I'm trying to figure out what is Mum's real difficulty with Meals On Wheels - bit difficult to work out from afar!  She tells me the meat is tough, she eats some of it, covering it with gravy helps.  And she'd rather eat things she makes for herself. My logical minds says to her, "well just eat what you want and leave what you don't" (cause i don't want her to cancel it).  That's probably no help to her, with her limited available logic.  I know she doesn't like to waste food.   I notice she keeps their meals for quite a few days - I think they're hard for her to tackle somehow.  She's got to try and figure out how to get through them - eat some of the tough meat - without wasting too much.    She says she'd rather eat her own cooking - which is true in that she can cook what she likes, but not true in that she is cooking less and less and not shopping often enough and eating too much rubbish - i.e., sweet things!  So I'm wracking my brain to see if there's a way to fix the REAL problem - that its too hard for her to figure out how to eat Meal On Wheels.  Maybe frozen meals will be better, maybe they won't.

The codes for things she doesn't do anymore are - "I'm not worried about that; that doesn't matter".
Code for:  "that's too hard for me to figure out, so i won't/can't.  Better to not think about it and focus on what's in front of me, or go to sleep in my chair".