Solanine opened the door fully, her impassive expression completely gone now. "She was here with a few of us on Tuesday night. She slipped out without saying goodbye." Solanine might have not been so worried, but phones didn't end up in the trash for no good reason. That spoke to something darker having happened.
"Sometimes she slips away quietly," Solanine said, as though this might absolve her guilt. She took a long drink from her glass.