As AC7179 suspected, we follow
Gothard's teachings for the most part but not completely (we were formerly part of
VisionForum and DS's goal was to be a VisionForum intern but with recent scandal we have left the VisionForum) for example we do not homeschool all the way up to 12th instead we do send our children to Christian school once they are in 9th grade, we do allow them more outside activities not necessarily just within the ATI community.
I am able to speak about Gothard and ATI with "mousears123" because I have not discussed them under my correct username, knowing I wouldn't likely find ATI people here.
We do want our children to be responsible and make their own decisions once they get to the 16-18 age range. Many families tighten the reins at that point but we've decided of we have raised them right then at 16-18 we need to let him be an adult as he could be married in as little as 3 or 4 years and the head of a family. We want the beginnings of that to occur under our supervision, but at some point it will happen. It is highly unusual for this young woman at 28 to be unmarried. Another part of our concern is WHY she is still unmarried, but we do know a few families with unmarried children that age who through no fault of their own have not married.
Our plan at this point is to keep her close by having them spend time in our home with our family and also getting to know her family as well. If we get more in between the two of them then we will know that nothing untoward can be going on. I thank everyone for their help, it has been so appreciated.