If its an asian black company, refusing to eat would make her look like shes not a team player. management would reliate with more work, tigher schedules, cold shoulder, move her to a distant cubicle etc. asians do workplace bullying pretty well.
otoh, i wonder why she hasnt found a new job. we've gone through the usual reasons but maybe she pons at work all the time and thats why she has to pull ot to do work.