She's being a Pita. Lol, she's sulking and ignoring her to let you know she's not happy that you left her. She'll come around. Our guys are so sensitive, and any change in their routine can throw them off. Does she like your friend? The only other thing I can think of is maybe she's not feeling well? Could she have eaten something at your friends house?, or could they have maybe fed her something she's not used to? I hope it nothing serious, and she's back to herself after being home for a couple of days. I have a parrot, Kiwi used to be so friendly, he was hand tamed, and then we went to Jamaica last year for a week. When I returned my bird would not let me pick him up, and he bites now. I was told that birds do this, they get pissed off when you leave them.