Hey Barbara, good to see you.
Yep, get that little cranky Princess off your shoulder!! She is probably hormonal and could take out an eye quite easily.
No kidding, this is exactly why so many of us tell everyone to stop with the shoulder perching early in the birdie-human relationship. I know it's comfy to be able to work with them up there, but eventually nearly all of us get the big facial bite, and some folks lose an eye at the same time.
Maybe try leaving her in the cage while you prepare food and tell her the biting has to stop. They understand a lot, so it could work.
Drop by more often.
Annie