Why did they think so?

Someone has truly said, women are very complex creatures to understand! As far as my knowledge about women is concerned, two type of women think every body who talks to them is interested in them. The one who is very attractive and approached by almost every guy who meets her and the other is one who is not at all shown interest in by guys. I guess the lady you happened to meet might be falling in any of the above categories. As a matter of fact, it can also be so that you have a very charming and attractive personality and on the counterpart, she may be interested in you, but pretending to show that the case is just the opposite.

In the question of them thinking you were coming onto the one girl, sometimes girls that age tend to think any attention from any man is "romantic." It's partially a self-confidence thing (an over abundance thereof) and it's partially a young girl seeking older man thing. Because females mature faster than males, a lot of women prefer older men and assume the converse is true (which it is but not always). I wouldn't put too much stock into it unless they were offended enough to report you to security or something but since you are speaking in the past tense and didn't mention security guards in your story, I am guessing that was not the case. As for the confusion about your kids... be proud of them. Correct the nurses and be proud that you have raised such a family...not an easy endeavor, I am guessing.

That's just what many people are thinking nowadays especially the young ones and the youth. I also receive some comments and reactions like that anywhere I go. It may also go with their instinct at times or how they perceive others. Regards.