Post-wedding mayhem

So my mom got married on the 8th and today they were taking Covid tests to see if they are positive or negative in order to go on their honeymoon cruise. We have over 5 family members staying with us, and she didnt want anyone to wear a mask at the wedding and didnt require anyone to get tested prior to the wedding. Without surprise, they both test positive which leaves me and my siblings at a loss because we cant go to work and how is our family supposed to continue to stay with us? Then she decides to talk to some more family in person and go make dinner knowing she has covid, its like she doesnt care or is in denial or both. My sister and I both have our vaccines, but we also have a 18 month old cousin in the house so shes being completly careless. Other than quarantining myself(which is hard bc our family sleeps in our rooms) what else should I do? I hope my family leaves soon and my mom gets a hotel room rather than spreading it but it is unlikely. Everyones just pretending as if nothing has happened, when everything just did.