Truth be told, the younger Tathamet siblings fight all the time.
It's hardly ever serious, rather it is the result of family living in such close proximity to each other for extended periods of time.
However, the eldest four practically never fight. If anything, they are the guiding hands that help to keep peace among the rest of the youngsters.
Gabbrielle was something of a special case among the others. In that, she kind of just listened to both sides of any argument without trying to fix anything at all.
They didn't find out until much later that she would be using their arguments as subplots for her dirty books.
Perhaps the reason why Gabbrielle never got involved in any of the disputes before is that she has always known that they weren't that serious.
And yet today, she had actually come forward to chastise her brother.
Straga was so unused to the feeling of being slapped that he didn't even seem to know how to react at first.