Is it customary to use his instead of her even if you refer only to women like in my example below. It is a comment to a woman from a woman, likely referring to only women. Shouldn't you say "her own way"?
Everybody is naughty in his own way dear.
It's not if it should be his/her or their. It is if it is about women, should you not use her instead of him? Basically does it mean that the person saying it is a man not a woman?