Just keep doing what you are doing and realize that things are going to take time. Your ball does not know you and is just a baby. I got my girl back in mid August and whenever I would take her out she would jerk a bit and act a bit scared. Now when I take her hide off she just looks at me and I can reach down and pick her up without any issues unless I make a sudden accidental movement or move to fast. She will warm up to you in the way that BP's do. I don't know what I would expect her to crawl into your waiting hands though.
Personally I want my BP to climb into my waiting hand, climb up my arm, coil loosely around my neck then when people I don't like come by I want her to rear up and spit fire balls at them. I have settled for her not acting afraid and quickly settling into her crawl all over the place attitude.