FeinStein Dead at 90 Will She Finally Step Down From the Senate

At first glance this may sound facetious but I’m not so sure.  After all, how many dearly departed still vote?
If my suspicions about Joe Bobo are correct, science is working wonders these days with animatronics.
US Sen. Dianne Feinstein dead at 90
This from the  Washington Examiner:
In the above article, the WE says she was the richest Senator with $94 Million stashed in her piggy bank. My question is: how does a “lifelong public servant” accumulate such wealth?