I believe this is old news I believe, I have read it a few times in other papers when she was absent. I don't remember if Laurent ever commented on it (the article below claims that he did), but it was considered the reason for a prolongued absense in 2014:
https://nieuws.vtm.be/binnenland/792...ch-stilzwijgen
Laurent's parents must 'thank God on their bare knees' that their son has such a stable and strong wife who is able to put up with his whims and moods. I think it is great that despite the trouble between Laurent and his parents this does not deprive the grandchildren from having a normal relationship with them.