I've just started to manage a small team and in particular there is one staff member who is quite difficult to manage. Maybe coz she is gen Y, her requests are neverending. I try to put myself in her position and think how I can best accommodate her and make her happy however sometimes, it's beyond my scope of control and her requests can be quite trivial. I also don't want my boss to think I can't take on managerial duties but I can't seem to handle her. Any advice?