AIO SIL loosing priviledges to my baby

Background: Over the last year SIL has made it pretty clear she doesnt care about my health, showing up to multiple family events either sick or with her kids being sick. Despite being asked to at least let me or my partner know, so we could not go, she's managed to give me influenza type A, whooping cough and covid, while I was pregnant. Im imuno compromised too. Since baby was born, she has again disregarded our request to stay home if either she or her kids were sick.

On Christmas day we hosted lunch, and her kids were again feverish and coughing. Im kicking myself for not telling them to leave, but I tried to maintain the peace and just asked them to stay at least 3ft from me.

Well, two days later my 4mo baby was coughing and with horrible diarhea, Im coughing and having trouble breathing.

I feel enough is enough and I want to cut all contact at least until flu season is over.

AIO?

(Edited to add: when my partner spoke with his sister, her answer was 'its normal for babies/people to get sick) which shows how little she cares about us not wanting myself or baby to be sick)