Don't talk in a game lobby regardless of your gender. If your lucky you run into somebody that's generally nice, but sadly most of the time it's people playing crappy music or everytime you say something they respond like complete idiots.
My advice, Play with friends and start a XBL party chat with them.
Also I'd be glad to help you with Spartan Ops (if I have the time) just send me a message. Haven't played it in a While!