Thanks Black Sheep - as you will note it was a very long time ago.
However, my husband left his home aged 25 and moved over 100 miles away. His parents in the meantime after many years were reinstated but go to a different congregation to the one they were disfellowshipped from. His mother visited my husband and went to his local meeting and against his wishes put the wheels in motion for him to be reinstated.
Since reading posts on this site it seems normal for meetings to be held regarding reinstatement etc. however this didn't occur with my husband. Apparently an Elder telephoned the congregation where the disfellowshipping had taken place and was told that they hadn't really done anything wrong so he was reinstated without any of the usual meetings.
I think it is an unusual case.
However, we have now not attended a KH in two years and so far MIL has not interfered! Long may this last.