Well, in any relationship you kinda have to go with the full package that is that person's family. However, that doesn't' mean the partner can ignore you and how you feel about that part of your relationship.
My wife's family is VERY involved in my life as well and mine is more distant. I accept this, however, she also chooses me over her family, so if/when I am irritated or mad at some aspect of that involvement she accepts it and will put family in place.
There must always be compromise and if she wants a long term relationship to thrive, she must take your needs as a higher priority to that of her family. Just as you must do the same to her need to be close to her family.
So as a outsider, I would think a move slightly further away where you can have a bit more privacy is a good compromise to meet both of your needs.
Also, my wife's dad/brothers live two blocks away and her mother is 10min drive. So I do know where you are coming from. However, I have also let it known my privacy boundaries directly to them.
