Only a fraction of my fellow females in this game that I have met have I found worth talking to. It's sad, but most of them are just way too girly and flirty and giggle way too much, not taking anything seriously - and guys switch off their brains around them. That annoys me. All of it. Most of them also don't seem to have a mind for certain game mechanisms. I guess they're just too superficially interested in encounter mechanisms for my taste.
Also... some guilds just aren't a place where you want to be as a female. Some groups of guys just are a bit weird... or they feel like they should show some good manners when a female is around... and they think they can't be themselves anymore in TS or that they no longer can talk about certain topics when female ears are in the channel.
There are many reasons why a guild may not like to raid with a female. We need to respect that. Let's not be mad about them. It's probably not a place where we'd want to be anyway.