its jealousy,this is not funny,the poor girl is trying to be professional at work and due to some petty behavior is makeing herself ill,nip this in the bud right away,or the doc will be prescribing her tranquilizers, i know you want to pour a litre of petrol over them but your hurt them more if your professional,get head office involved,once they are made aware of this it will screw any prospects of promotion on their part,keep us updated pal.........