Who is right here? Us or teacher Neither?

Well today my teacher asked me to get some props ready for the production there was 5 of us and one said i cant miss my arm is bad and it was in a cast so he couldnt do it. then she stormed out because the rest of us didnt jump out of our seats straight away so she asked another group and told them that we WOULDNT help her then another teacher came through and she said the same to her. chloe was sat kind of near a door and my teacher said your in the way and swung the door at chloe hittin her in the side of her head and her sholdor? Should chloe do something about it or is it generally our fault because we didnt get up to help her.