MIL PROBLEMS

I can’t stand my boyfriends mom, we’re having a baby and she keeps trying to tell us what we need to do. Mind you we are both in our mid 20’s and both work full time. She’s insisted that we move closer to his work which is far af from where my parents live and my work and our daycare. She then insisted that me and our future newborn baby take the train to work and daycare which is 2 hours. I told her no we were moving closer to my parents and my work / daycare incase something were to happen I want to be close to my baby. And everytime I go over she says my unborn child is her baby and not jokingly. She then tells me she’s not getting us anything for the baby because my friends and family will get us things. Which is fine but idk why she had to tell me that. She also is always saying negative things about my appearance or is always comparing me to her. She is obsessed with her son like I’m pretty sure she’s in love with him. Anyways it’s just super weird and idk how to set boundaries without her making it seem like I’m trying to become between her and her son (my boyfriend).