My mum and I have never really gotten along. She's been utterly fixated on my weight and appearance since literally birth (would show people photos of me as a newborn commenting on my body shape and how big I was) and this has never let up over the years apart from very briefly when I lost so much weight I was down to a size 6-8 and had lost too much weight for my height (then she went from complaining i wasn't toned enough to saying i was too skinny within the same week). The weightless wasn't intentional but at the time I was really struggling with stress and anxiety and couldn't stomach eating properly.
I've worked very hard over the years to undo the negative associations she's put in my head through counselling and working on myself and now I feel I have a decent relationship with my body even though I'm at my heaviest and am currently overweight. I am trying to be healthier - I am active as part of my job, I work out when I can (but also have a full time job and a toddler with no childcare so not easy to go running or to the gym regularly) but i manage running at least once a week and on the whole I eat well but I do get a takeaway once or twice a week. My mum is absolutely stuck on this. If I'm getting a takeaway she will make comments on it, sits and stares at me eating to the point I now eat in my room to avoid her, makes comments on my portion size and if I'm home from work late accuses me of going to takeaways after work (I've only done this a couple of times in the past year but she thinks it's every few days). It's always framed as "concern" but it's also always dripping in judgement. She's even told me she believes I'm killing myself with food and when my ex cheated on me told me it was my own fault for not losing the baby weight. For context I'm a size 16-18 and a lot of that is boobs so not extreme in the grand scheme of things.
I've tried completely ignoring her, telling her directly she's impacting on my mental health and told her to stop, reminded her that I'm an adult and I know enough to make an informed decision for myself, got angry and frustrated- nothing makes a jot of difference. At the moment due to divorce I'm living with her and working on moving out as soon as I can but it's absolutely destroying our relationship and that makes me really sad that she would rather have her say than have a relationship with me. How do I manage this? She also eats similar to me, gets a takeaway probably more often than I do and is never done buying cakes and junk for the house to eat every night