It is pretty obvious that Lois is not in a conventional marriage with Matymbou.
I really don't think any of the explanations so far work. I almost thought the "maybe Matymbou acted to protect her from a marriage to some other guy" explantion might work, but I don't think Lois' interactions with Romaric fit with that.
I am guessing there are some complicated reasons for Lois' relationship, I just don't really have a clue what they are.
