flex nurse

on our unit we have a charge nurse 3-11 shift.her job is to help out the nurses,assign beds and problem solve.the problem is -she does not do her job well.she has had this job for over a year. her assignments are uneven 1nurse with 6 pts./1 nurse with 3 pts.-so the nurse with 3 pts.gets the first admits.she says she will help you but if she does you have to wait an hour to start an iv or help admit a pt.she will assign you 1-2 admits ata time.she oftens asked another nurse to do her work. her assignments are not out in a timely manner and ofter are not correct.one time we had a pt go bad and sent him to the unit-she asked another nurse to go to the unit with the pt and his nurse-and she swept the floor. i mentioned to her 1 night i had apt not doing well-prob.going to icu and she told the doctor"the apples are ready if you want to come pick".she did not help me with my pt.one employee spoke to the DON about her and she got into trouble.any suggestions