Ok she sounds a bit like me with the sensitivity and with being a little bit messed up emotionally and with relationships.
I do believe hornones play a role especially when a woman is not entirely sure. This is true in my case.
I am just gonna offer this up based on me.... maybe she feels like you have a lot to offer her. But is not happy about something more superficial (you mentioned age) logically, this makes no sense to her. You offer her a lot. A good guy with stability. It would be stupid for her to not go for you. She knows this. But she is now on hyper alert for anything you do. Cause that would justify ending something that else wise is good for her. But another factor is there that is bothering her about you.
What was the comment? Or what did it pertain to. Sometimes women are also more sensitive to certain topics then men.
Another thing i note with you and my own experience and gingers... why is it that men like emotionally unavailable women? Im not emotionally available. Im admittedly being selfish and horrible post divorce. I have made superficial efforts and charm. No problems attracting men. But with my ex i was opposite. Very dedicated. And loyal and invested and he ran. Ugh...but i am bringing this up cause it sounds like you are going for soneone not truly available.
