Did she have a sign, wife of terrorist - NO. But I had a bad feeling as she was traveling alone, avoided other people etc. I think security sucked as no one searched her or interrogated her. Yet my wife was - and she is a little old Jewish Grandmother. Wouldn't you ask "Where is your husband" etc IF YOU HAD ANY SENSE?
Maybe she's not married? Isn't that possible? Are muslim women not allowed to travel without their husbands? How do you know she was a muslim? When I travel by myself, nobody has ever asked me where MY husband is. I think you are wound a little too tight if you are at the point where you assume a muslim woman traveling alone is likely the wife of a terrorist.