I don't think she'll get half of everything he has. While the prenup was probably very generous his attorneys made sure that he was well protected. Usually a spouse is entitled to only half of what was made during the course of the marriage and to half of the property that was acquired during the marriage or that was acquired in anticipation of being married and that would be used during the marriage. She was already living in one of his houses so that's taken care of. She probably got to keep whatever cars he bought her and at least one credit card and/or expense account. This time around they were only married for three months so technically she would only be entitled to half of whatever he made during that time which was probably a pretty substantial amount even though he'd been pretty quiet.
I know I've put a lot of thought into this but just imagine what your life could be like if you had all that available to you. She must have fucked up in a big way. I can't believe she couldn't behave herself in order to keep her family intact and protected and to have unlimited access to all that.