Having newborn around people please read

I don’t want people around my newborn for obvious reasons I have friends with babies in the hospital right now and there’s so much going around. I’ve ordered groceries and have not gone anywhere I didn’t have to go. My baby will be two weeks tomorrow. My sister doesn’t want to get vaccinated nor does she wear a mask when going out all of which I respect. I choose to do those things especially bc of my children. I told her near the end of my pregnancy she couldn’t come around bc I didn’t want to end up giving birth sick. She and her boyfriend are around a lot of people and go places. She’s gotten me sick numerous times and I have a medical condition that makes my immune system weak after being sick so many times I had to put my foot down about her coming over when ever she wanted. She would knowingly have symptoms and wouldn’t say anything unless I asked and it honestly made me sad like she didn’t care about my well being. Today she texts me and TELLS me she’s coming over to bring my baby’s something and she’s running to the store. I don’t want her coming over at all especially after being in a store. She TOLD me she’s coming bc if she ASKED I would have told her no I feel so disrespected. If she wasn’t allowed over near the end of my pregnancy for those same reasons she isn’t allowed around a two week old baby. I felt mean constantly having to tell her no and I have to again I haven’t responded to her text bc I’m honestly so tired from running after my two year old and taking care of a newborn that I don’t want to deal with the confrontation she’s going to create from me saying she cannot come. I guess I just wanted to rant but I also want to know if I’m over exaggerating. I don’t know where her or her boyfriend has been how she feels etc I don’t feel comfortable having her around the baby. I haven’t had anyone around the baby at all. How long did you all wait to have visitors etc? Ik some have visitors right away but with her carelessness I’m honestly scared. We believe in natural remedies etc but she takes it too far. She’ll be sick and say “drank some tea with ginger and blah blah I feel better” as if that means she isn’t contagious or anything just bc SHE feels better. She just throws the science of viruses etc out the window which isn’t how natural remedies work… and I’ve tried to explain that too and she called me negative and told me I need to “manifest more positive outcomes” when I’m just being realistic.. I have a strong fear of my child passing away from being sick