So, my sister and I have a bit of banter, as I’m sure most siblings do. I think she was coming up the stairs and I was stood up at the top on the landing. As she comes up to me, she gives me a blunt “move”. So to teach her not to be rude I just stand in her way and don’t move. So next she says “I’ll cough on you” as a threat. For some context I live in the UK, where at the moment covid19 is killing around 1000 people a day. I should also mention that I have type 1 diabetes and therefore am vulnerable and so could easily die if I got it. Taken aback, I tell her that isn’t a cool joke to make and that if she did cough on me and I later died because of it then she’d probably feel terrible. She then says something along the lines off “nah I don’t think I would actually” while making a sort of ‘pretending to be thinking face’, you know what I mean. So I’m like, what the fuck is wrong with you, to which she responds by coughing into my face.

As a response, I’ve stopped talking to her, stopped the friendly banter. I actively avoid going into a room where she is if I can, such as eating in my room rather than at the table next to her. Today she complained to my mum that I was being horrible to her by blatantly ignoring her, and my mum, as she likes to do, instantly took her side and told me that it was obviously just a joke and that I need to stop being petty.

I really don’t know whether I am really being petty or if my response is somewhat justified. If not to show my disliking for her, then simply to avoid her in case she decides to cough on me again. I think if this had happened when we weren’t in the middle of a global pandemic I wouldn’t be so upset with her, but the fact that I am literally not leaving the house for any reason right now because of how dangerous this thing is for me and then for her to go and cough on me just really doesn’t sit right with me.

Go on then, I know you’ve been waiting. Tell me why I’m wrong, Reddit.