I won't go into the whole story as it's too long and tedious, but we have a girl working for us whom we promoted to assist our yard manager last August. Since then, we have lost four valuable members of staff (and another about to go) - all citing this girl as their main problem. I have also received complaints from four customers of her behaviour/attitude when they have visited the yard. Unfortunately, the yard manager she was assisting is one of those who has left. She is not up to doing the job on her own, she puts massive unnecessary stress on DH because she is unable to manage and passes all problems onto him. Her attitude to all the staff is vile and she's a complete princess who cries and flounces if someone says the wrong thing to her. As a consequence we have an unmotivated staff, reluctant to do anything for her and I have had enough. DH will not demote/sack her, despite everything because he's fairly ignorant of unemployment law and imagines that every bad apple will sue him for unfair dismissal. I am not prepared to stand by and watch her destroy any trace of morale our business has, nor watch another good member of staff leave because she is intolerable to work with. She said she wanted to travel, so DH organised a job for her in Australia and now she doesn't want to go. I'm at my wits end - can anyone offer advice?