Taming down my peahen

[J3172]

My peahen is almost a year old. She was raised with game birds, and so acts like one. I try to give her treats by hand but she doesn't want them until I through them to her. She will come within a couple feet of me though. Is there a way to tame so she wont be scared of me? I would love to let her out of her pen but I dont think she will stick around.