Even though I'm fully vaccinated, and they are vaccinated, I'm very afraid of infecting family members with COVID. By not getting together with my pregnant sister, it's hard to know if this is an avoidance compulsion, or a smart safety move. Thanks for the support, everyone!
I would say it’s a compulsion. You are vaccinated. Is your sister vaccinated? If you wear a mask when you get together with her you will be okay.