Thank you all for answering.
The problem was not much about wanting more space but feeling she is worried about me.

i talked about this with my T and she asked me if i wanted her to talk with my mom. i accepted and today my mom told me she talked with my T.

apparently, my T told my mom i feel too "studied" (agree) and my mom said she is worried about me being too thin. my T told her not to worry and i hope this will fix the problem. but,

i CANT believe my mom thinks that! she seems obsessed with this stupid worry. im not nearly as thin as i'd like to be and btw my BMI is totally normal. my mom seems to have a complete distorted view on what being normal weight is. just because she, my dad and my bro are overwheight, it doesnt mean she has to worry about me for being normal weight. i feel like she'd like me to be fat. more like her. i HATE this thought and i HATE being fat. and

i absolutely HATE her distorted view. she was not as worried when i was underweight for real, and she said i looked nice when i put on too much weight some time ago. i have lost the extra weight now but it doesnt mean im underweight. im so, so, SO sick of my mom thinking that. she has been like this on and off for years and years.

i feel i cant even be in control of my body. because she seems to judge and get worried constantly. i DO control what i eat, i WOULD like to be thinner, i WILL be thinner but now im not. im fighting every single day, every single minute with food. counting calories all the time. i wouldnt mind becoming ana, but for now im not and i just hate with all my heart my mom controlling my body. i cant even be as thin as i want? well, i guess i could, but i cant stand that look on my moms face... isnt this crazy? am i not in an invisible cage? i hate her for that. and i hate myself too, for hating her and for caring too much about her stupid worries. im not in control of many things, but this makes me feel im not in control of even my body... i feel so trapped