Trigger warning: mentions of dieting, binge eating, anorexia, weight loss, etc.
I'm 21 and living at home whilst finishing up my last year of university.
I'm finding my DM's approach to me is quite critical but I'm not sure if I'm overly sensitive.
For context, she has always struggled with her weight and and is constantly either dieting or binging/comfort eating. I find it exhausting to keep up with as when she's on diet mode she will be judgemental about what I choose to eat e.g. if I am eating a chocolate bar for dessert. Whereas when she inevitably gets fed up of heavily restricting her food she will go onto comfort eating and if she sees me eat something healthy she will tease me about it as if it's embarrassing to want to eat a piece of fruit. It feels strangely competitive. I just find it exhausting trying to keep up with the constant changes in her attitude towards food.
She also makes comments about my weight. One of my friends at university lost a lot of weight during our first year and she would actively compare me to her and tells me I'm now the fat friend, how beautiful my friend looks and say how I needed to do whatever my friend was doing - what my friend was doing was rapidly developing anorexia. At Christmas if she ever buys me clothes as a gift they will always be 1-2 sizes too big, or if she wants to buy me clothes as a present and she asks what size to buy she doesn't believe me and says "no... you must be a size X at least surely?", like I think I would know what size I am?
She is always negative about my appearance and has never complimented me. The closest to a compliment I have got is telling me I look a lot slimmer than usual in a particular outfit, implying I look fat in all my other outfits. She also likes to tell me I look much better with glasses which I think is a bit of a back-handed compliment when I wear contact lenses most of the time as I don't like wearing glasses, but that might be just being overly sensitive. It's hard to describe but everything is said with the underlying intent and perspective that I am fat, ugly and worthless and she's just giving me a heads up that that's the case to help me. Even beyond my appearance, she just seems to have such a low opinion of me and low expectation of how I should be treated by others. She implies friends don't really like me, guys don't really like me, my manager doesn't really believe the positive things he says about my work, my lecturers don't really mean the positive feedback they give, etc.
She is also very complimentary about her friends' daughters and my friends which I find strange given how she can't bring herself to compliment her own daughter. She didn't even say I looked nice at my prom but she will tell me how beautiful, stunning, gorgeous, lovely, intelligent, funny her friends' daughters are or my friends - she's saying these things behind their backs privately to me, so she's not doing it just to be nice to them. It's such a sharp contrast with how she talks about me.
She also laughs a lot at me when I make any kind of mistake. For example, if I stumble when walking she will laugh and laugh about it acting like she's being playful but it goes on too long and becomes a bit of an over-the-top reaction. If I have a spot she will point it out and laugh about it, etc. I'm not afraid to laugh at myself but she drags it out for too long that it just feels kind of mean?
It's so subtle that most of the time I get on really well with my DM and we are really close, but there is this underlying critical nature that I find so upsetting.
Am I being overly sensitive? Are some examples me being overly sensitive? I am quite a sensitive person so I'm not sure if I'm blowing this all out of proportion.