FWIW, this is personally my ideal working environment. I can't speak for women in general, and I'm not a moral authority, but this is exactly the kind of treatment I want from my coworkers.
>what should I do to be better?
I don't know, honestly. I know that's an inadequate response, but I'm not sure how to appropriately address ingrained societal sexism either. As far as subconscious bias in hiring goes, having rubrics and standardized interviews goes a long way at eliminating it. I'd theorize that standardized metrics for performance reviews would help on that front, too, though I don't think that's been studied.
If you browse the million and one women in tech posts out there you can see people talking about it at length, though I would be wary of taking somebody's opinion as truth just because they're female, and I would be doubly wary of taking a tech blogger at her word vs an actual female engineer. Your personal set of ethics re: equality of opportunity vs outcome also plays into what you "should do" quite a lot. Some suggestions (like formalized hiring rubrics) are completely valid whether or not you believe in equality of opportunity vs outcome, but others (like instituting diversity quotas in hiring) are not.
This blog post is well cited and worth a read, it has a few good suggestions IMO: https://medium.com/tech-diversity-files/if-you-think-women-i...
And this personal anecdote is a positive story, which I think is just good to keep in mind (that not all individual women necessarily feel or have been through the standard negative Women in Tech narrative): http://lea.verou.me/2015/12/my-positive-experience-as-a-woma...