There is such a thing as a mom who chooses sides, and sets up one sibling against the other. It is usually driven by spite and envy. Not pretty.
and I imagine that it is also possible that when a family member is fabulously wealthy, and it is one of the most important nights of his career - and he is trapped in a room with greedy relatives with press outside - might that be a good opportunity for greedy relatives to attempt a little extortion?
The mom and sis claim they only pressed charges because he needed to be taught a lesson.
hmmmmm....