Keep in mind that you have an animal that will live for twenty or thirty years here. Patience is the key. I would handle her maybe twice a week or so. Don't try to "train her". Likely she will train you first.

BP's react to things above them. This is a matter of survival for them. Try to come in from the side as much as possible. The tricky time is getting them out. Once out things are usually fine. Sit in a quiet area with her in your lap/hands for a few minutes, a few times a week and I'll bet you guys will be best friends in no time.

Of course they are all individuals. I have a few I don't even bother trying to hold anymore, and some I hold every day.