When Boies Schiller Flexner managing partner Sigrid McCawley told the makers of the Netflix documentary “Jeffrey Epstein: Filthy Rich” that she was committed to stopping sexual predators through litigation, one viewer was reminded of something she’d tried in vain to forget.

That viewer was Boston Ballet dancer Sage Humphries, who claims she was repeatedly sexually assaulted by her dance instructor in 2017 when she was 19 years old.