How can I get my boss's pet bird to stop biting me?

I recently just started working at a pet store and my boss's pet umbrella cockatoo decided I would be it's new victim. It's fourteen years old and used to be very nice apparently. She seems to respond well with all the other workers there, but she follows me around the store attempting to bite me and it's very hard to focus on work while trying to fight off a bird strong enough to break my finger. Today, she lifted up her foot as a sign she wanted me to pick her up. I was scared but i did it and everything was fine until she bit five little holes into my arm for reasons i don't know. She also lets me pet her for a while but then goes to bite me. When I avoid her she picks up things and throws them around at the front counter for me to clean up. And as soon as i go back to pick up her mess she runs at me with her feathers puffed up trying to bite my face. It's not my pet so I can't train it. And I know it wants attention but I can't give her that while I'm working. If me and the bird could get along, work would be so much easier. Is there anything I could do to get her to like me without risking another painful bite?