I can empathize with the problems being described. My ex TW used to drag me out to the village on a regular basis - and then leave me standing there holding up a pole with nothing to do or anyone to talk to. Used to have to drag another falang along with me just to have someone to talk to. Of course, when there and the family needed or wanted something - then of course I was included in the conversation and saw a lot of hands being stretched out.
I know a lot of falang females that have come here and experienced the same that you are experiencing in one form or another. Simply stated, especially in this area, there isn't much to offer a falang woman. In reality, there really isn't much to offer a falang man on a regular basis. The majority of men here are with a woman who is with them almost 100% of the time.
There are some falang women here - though one doesn't see much of them. Know that there is at least one that working at one of the local schools - believe that she is French. You can PM me for additional details on her. Another falang woman here is English - and can be found at the City Lodge. Sure that she can empathize with you. Her name is Tracy. She might be a bit rough around the edges - but nice none the less.
Bottom line is don't expect too much too fast. Everything here happens slow.
Dealing with a Thai family is always difficult and different. Bear in mind that you don't need to go every time - but if you don't go once in awhile, the family may be offended - and think that you don't like them. Thais don't want people not to like them - especially if you are part of the family through marriage.
Good luck.