Hi,
There is no such thing as a set mind, in my opinion. As these birds are known to be so intelligent that they learn all their lives. IO think it is just the new environment that is making it nervous. How long have you had it? Leave it alone a month to bond with you first and to know the place.
It might know your face from your visits to it's ex-home, but now it is on your turf. It is like a shy kid. When you were at her home, she was playing and all, now it is missing her mommy and is in a new place. Think like the bird.