problems w husbands family!?

im the kind of person who doesnt really talk as much, only to the ppl im very close to. i never really get the chance to be w my mil, btw we never met til i marry my husband cause he never wanted to introduce me to them when we were still dating. when she visits, i dont talk as much. anyways, she acts like im stupid cause i dont talk much. shed say that i should be glad my son isnt like me whos dumb and dont talk a lot. i should be glad hes like my husband. she said all this twice already. i agree w her that i dont talk as much, but its disrespectful for her to say that im stupid because of it. my husband agrees w her btw. also, whenever i say hi to them, they never respond back. when my mil came to visit, she checked our fridge and said she feels bad we only eat microwavable food. my husband said yes thats all we eat, microwave food. but fking hell! i fking cook homemade meals everyday! those microwave food are just for him to eat as snacks. i didnt say anything cause i was in another room, wiping my babys poop. i always feel degraded whenever we're w his family. he doesnt care cause theyre his fam and obviously he respect them more than me. what should i do?