Why does the internet insist on telling me things that I didn't know and didn't really want to know?
MZB's second husband was a sex offender. With a record. He served two years in Chino (death commuted his 10 year sentence). And MZB was rather incurious about what was going on.
(I should note that the author of the latter site (SF author Stephen Goldin) is not entirely objective inasmuch as his stepson was molested by MZB's husband.)