How do I make my Lovebird feel comfortable in my presence?

i bought a female lovebird named Abby the other day,put her in cage and placed her in my bedroom.she's really cautious when i'm around and won't eat unless she's left alone in the room.when i reach my hand inside the cage and try to touch her,she crawls to the other side of the cage.it makes me sad that she's so scared.how do i make her trust me? :( heeeeelp!