Something still is not right here!! I think maybe a pullback is in order. Just a small subtle one. Its not just the no sex thing but she needs to do more of the work if she indeed wants to recover the marriage. I am not sure what to do about the son that wants to go home and not wait. I know she has a work assignment that goes into the spring but its like she has no problem being away from you for that long...as long as she has the son.