" You're not upset with your gf, and your gf is not the one causing this. I wouldn't talk to her about it and expect her to be able to do anything about it. You can vent to her about it, yes, but I wouldn't approach it as though it's your gf's problem. "

Yes, I am NOT upset with her because their behavior is not HER fault.
No, I don't expect her to do anything about it.
It would be nice if she would tell them that it bothers her the way that they treat me and act as though I'm not even there (even though I'm always sitting right next to her), but I'm not going to ask her to do that.

I'm considering talking to one of the women about it, but I'm not sure how to go about it. Not sure how to word it in such a way that she'll be responsive and maybe even apologize to me instead of telling me: " Too bad, Alan. Deal with it!! "

The other woman has a history of being rude and inconsiderate to others, so I'm not even going to consider saying anything to her about it.
Would probably be a waste of my time and I would just end up even more frustrated and upset than I already am.

Thank you very much for your feedback!!
I appreciate it!!