Is it rude that nobody asked me what was wrong?

I was having a rough morning and I came into work HOT!
I mean not in an attractive was but I was so pissed. I came in the classroom, slammed my purse and just sat down. My coworker looked at me and just kept doing what they were doing. They talked to each other and ignored me. Talked about the day for the students. Not one person asked what was wrong. NONE of them.
The elderly coworker walked around me and got things together and after the kids got here they lined up the kids and told me to take them. I got a pissy look. My coworkers and the kids just looked at me. The other coworker said she will take them since I’m too much of a grouch. My mom passed away almost two months ago. Nobody at my job cares. They know my mother passed. Nobody asked me what was wrong! My boss said get it together and do my job. Either do my job, get fired or take another day off to grieve because they can’t have that and everything has a job to do. The world is cruel. 💔
I wish my mom was still here to comfort means hug me tight. Nobody asks me how I am anymore.

Is it rude that nobody asked me what was wrong?
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