hi @cathleen
I am not a nutritionist and don't know if you will find this helpful but I'm vegetarian and have lost nearly a stone over the past couple of weeks with a 'little and often' plan which might suit you.
the rules are simple - if you are hungry and it has been at least 2 hours since you last are, you can eat - but only 200 calories at a time (250 allowed for "main meal" in the evening). don't eat if you aren't actually hungry, and ensure each mini-meal is at least 50% vegetable and protein, not just carbs.
for recipes I mostly use the vegetarian options of the free online recipes on Hellofresh - they tend to be around 400-450cals per serving so long as you use spray oil to control calories so I portion up half-size servings into little tupperware tubs and only need to cook every 3 days or so. they also tend to be vegetable-heavy with not too much emphasis on rice, pasta etc. other options are a tortilla wrap with a bit of houmous and lots of salad, ryvita crackers with various toppings, or as an occasional treat I love to have an apple sliced thin with 150 calories worth of blue cheese
starting out I was probably eating 8 or 9 times a day so 1650-1850 calories but within a few days I found I could push the time between mini-meals to 3 hours then 4 and now I am fine on 1000-1250 calories a day without feeling hungry. the small meals mean that the capacity and expectations of my stomach have shrunk significantly which is what helps keep it sustainable, and the fact that its "normal food" means I can use any recipe that looks good so long as I can calculate the calories and ration out 200 calories worth.
if you don't feel satisfied after 200 calories you have to stop anyway but only for 2 hours. although theoretically this could make someone end up eating 2400 calories in a day if they actually ate every 2 hours, in my experience this hasn't happened, as it doesn't take long for 200 calories to feel sufficiently satisfying and to sustain me for a lot longer than 2 hours. I suspect it wouldn't work if you chose 200calories worth of crisps though!
the issues you have around food seem very difficult to live with. not having been in those circumstances myself I don't know whether you will find this way of eating more helpful or less helpful than other things you have tried.