Cal was sure he had sensed someone. He was prepared for almost anything though. Or at least he had told himself that. There were some things he could never really prepare himself for. Like, finding himself in a strange new place and not knowing how. At least he didn't sense anything bad about the stranger nearby.
As for what she might sense about him? What was he? Maybe somewhere in between. There was a lot of hidden pain. Grief. Sorrow. Confusion and grief tempered and tamed by a trust in the Force. On the outside however, Cal came across as very peaceful.
"Hello" he replied, his tone friendly. "I'm Cal. This is BD-8" he said. The droid booped hello to the strange woman, staying on Cal's shoulder. "Where are we?" he asked.