Almost contemporary to the Redactron Data Secretary was the vastly more advanced NLS (from Engelbart's demo) which used a CRT for output and keyboard and mouse for input. The mother of all demos was given in december 1968, I couldn't find the exact date that Redactron was incorporated but the interview of Berezin by CHM gives it as "the end of 1968".
The Data Secretary might have been the first successful Word Processor but it appears that it's hardly the first one, but claiming that "Without Ms. Berezin there would be no Bill Gates, no Steve Jobs, no internet, no word processors, no spreadsheets; nothing that remotely connects business with the 21st century." seems incredibly hyperbolic.
I hate that every time I hear "first person to do X was a woman" I'm immediately skeptical because, if I look into it, most of the time is at minimum using a bunch of misleading definitions.