I hate my body I’m 4,11 43kg and Karen says I look a little bit chubby and while she’s overweight she always comments on my body

It’s the same Karen. her daughter hates me because she has beef with me still from 10 years ago that she started herself and blames me for it. I’m 4,11 c cup hourglass shape 43kg this bitch said I look a little bit chubby in September which a huge smile on her face. And she mocked me in January for being too thin. This bitch is overweight but finds it hard to lose weight but makes fun of me in front of her own daughter who’s best friends with my bully. Which harassed me when I was 20 mocked my breast. Why is skinny shaming acceptable yet me saying to this dumb bitch to lose some while making fun of me it’s unacceptable and I have bad attitude.