I think she has, unfortunately, met with foul play, either domestic or stranger. I very much doubt she is hidden away somewhere collecting her thoughts, she seems to close to her family to have them worry about her for 3 weeks. She doesn't have the means, as far as family and LE know, there has been NO bank activity while she has been missing and there were no large withdrawals in the days before she vanished. Plus, she had just gone for an audition, surely if she was planning to go off grid for a while she would of waited till she knew how she had done there.