Umm, no. You've missed the point and are instead focusing on a distrust of you, which is fundamentally not what the problem is at first. It becomes a distrust of you when you make it one by being defensive and accusatory of her distrusting you. Whether you do that directly or not doesn't matter, it communicates it and creates it.

She fundamentally does not trust other women, for the same reasons I mentioned way earlier on. By making it quite clear that you're aware other of when other women are hitting on you and agreeing with her you make it clear that it's cool. In the event that she still has an issue you make it clear that shoudl she continue to have it then she's just going to push you away with neediness and attempts at control that are just unnecessary. The majority of the time that doesn't happen though, all that's necessary is a simple mutual understanding between two people.

If she's insecure about losing you it's one of two things, she's either got a low self esteem - which I doubt given the nature of the kinds of people everyone here wants. Or, alternatively, you created that insecurity in her by playing too many mind games. If it's the second thing, you only have yourself to blame.