Henry noticed this. "You don't think something has happened to her,do you?" he asked me.

VOA: special.2009.07.04

You feel uneasy and think of something you need to discuss with him or her.

WSJ: What Makes People Overshare?

And Katie was very particular, and yes she had something about her which just made me think that I should pay attention.

BBC: Last Updated: Wednesday January 11 2006 09:25 GMT

"I think she had a hard time getting out of the country then, because she called my youngest daughter and said, 'If I'm not home by Friday call the US embassy', so I think she ran into something over there, " says her grandmother Carole.

BBC: US woman Nicole Mansfield 'brainwashed' into Syria fight