Basically her Care Manager got her there, but no one told her she'd be staying there. She is engaging in the activities, but if there's any down time she is calling all of us to come and get her. "Why am I here, who put me here, who would do this to me" etc.
If she is doing activities and eating she is good. Cut back on answering the phone, if she starts just say "I have to go",
I would not visit often, let her continue to assimilate to her new surroundings.