Maybe since she left her phone and shoes at the bar, she was planning on coming right back. Could she have left with someone to go check on somebody else or to retrieve something and had every intention of coming right back? Was she coaxed away from the bar under false pretenses?
It has been established that she left with CR, went to her apartment building, and then to his. It certainly does not appear she was coaxed from the bar under false pretenses.