Glaring Error

Spent a majority of the day synching up the team's computer calenders for next year when eager beaver volunteer Mandy pointed out a glaring error. I'd spent three hours working on calenders for 2010. I am positive she is hankering after my job, every step I take she is behind me suggesting more efficient ways of doing things and highlighting my mistakes. She may as well come into work with a six foot post it note with the words 'Sack him' written on it and stick it to my back. My team leader thinks I'm just being sensitive, she told me to relax and that there is space for everyone in the office. I hope she's right!