Pogonina has the full GM title however, not just the WGM title. She is one of the very few ladies to ever have done so.
I didn't know that...why doesn't she use it here then?
It seems you're right, but "grandmaster" and not "woman grandmaster" is written in several places. Possibly it's a difference between Russian and English usage.
Whatever the case her peak rating was above 2500, which is the general standard for GM status.
According to FIDE, Natalia is only a WGM. She has never gained either IM or GM status.
Really the whole WGM stuff seems pointless to me. Chess does not require physical exertion that women cannot handle just as well as a man, so having these female titles is utterly pointless in my opinion.
Plus it's realy confusing. Where the hell does a WFM rank among titled players?!
Why is this important? be happy that we can eavesdrop on the discussions of very strong players. lets try to learn and ask questions that keep the conversation going.