Very valid points, New Thoughts. Although without her phone and maybe no watch, Libby may not have known what time it was so was thinking/hoping the bus was still on its way. Maybe PR (if he came into contact with her) told her the time and then she realized there was no point waiting. I don’t see that him offering her a lift home would have been why she got in the car - it wasn’t a far walk away and she probably couldn’t get inside in any event. Unless as previous posters have said, he offered to try and jimmy a lock or something. Sorry, I feel like I’m rambling/going round in circles - but just stuck on that initial contact