RnM. Wife and I have gone through a somewhat similar situation, with our youngest daughter. ( 13 yrs ) Whenever her oldest sister visits us from out of town, she tries to make arrangements to bring her sister over to my wife's parents, who are still entrenched in the org. Our oldest daughter who has never been a practicing JW, sees no problem with it, but in times past, whenever the youngest has returned from a visit, we always "got attitude ". So we put a stop to it.
They would also take her to the Sunday meeting, and we were concerned about the " brainwashing factor "
BTW Wife's parents treat us like the plague, but we suspect they think have a chance with our youngest.
Be afraid...be very afraid !
Millions Now Living Will Never Die Know "