Setting a boundary to mom as a millenial

hi folks, i just wanna hear your similar experiences.

i (30f) have been living in USA for 6 years. haven’t seen my parents for 6 years. i am pregnant, and my mom wants to visit us next Spring to meet with baby and my husband (finally). HOWEVER, i took therapies because of my mom in the past, she is the reason why i left home right after high school and never came back. she has lots of behavioral&mental issues. i offered to her get help but she declines. anyways, i told her last night that, i have PTSD and i am a mom&wife now. i am putting my family first. i want you to control your behaviors when you come, and since we haven’t seen each other for years, i need you to stay max 2 weeks. if everything goes well, we can plan a longer trip to see each other in the future. i don’t want you to behave same around my kid and husband. i am peaceful in my own little family. she told me that she does not guarantee about her ✨ actions ✨

she refused to stay 2 weeks because she will be flying 13 hours and expects to stay longer (min. 1 month) although i feel weird that i put her boundaries but i think i did the right thing? did you ever put boundary to your mom and how did it go?