This isn’t a rant but this seems like the only place that is suitable for my topic

My mom is having a major heart surgery tomorrow and the doctors are prepping her right now or something I don’t really understand but she will be under. My brother was supposed to come with my grandma and I today to the hospital but no one knows where he is right now. My mom was super nervous and started crying. My grandma told her that she loved her just before they took her away and I didn’t say anything because I’m nervous myself I either giggle or if it’s this serious I’ll close myself off to the world. Right after they took her away my grandma turned to me and asked me why I didn’t hug my mom or kiss her or tell her I love her. I just stared at her and asked what two times and then I shrugged because I really don’t know why I didn’t say anything. Then she asked me if I know how major the surgery is tomorrow and I nodded. Now I’m stuck in my moms hospital room with my grandma and she’s acting really irritated towards me and it’s very frustrating. Am I an ass? I know I should have said something but I didn’t know what. It would have made both of us even more nervous.