I want my kindergartner to eat at school cafeteria but only vegetarian food with milk.how can it be possible?

i want my child to eat warm food at cafeteria of school like cheese piza,vegetables and fruits,muffins etc.but i dont want her to eat meat products. she is too small to decide by herself.what can be done for that.i doubt that in schools there is any differentiation in serving veg and non veg food.when i give her lunch from home,it gets cold and doesnt taste good .pls help.