But Margolyes is smart enough to balance it with insights into the man himself, which go some way to explaining why he treated women so callously.
"He was a victim of his own childhood as well as a product of his time. After all, we are all imprisoned by the era we are born in. On the one hand, he was a man deeply concerned about the lot of people who were poor, disadvantaged and living on the edge of life in every aspect but then he was so ghastly to women.
"You just have to accept it; this was who he was. We've been left with his legacy which is an extraordinary body of work, so while we might criticise the man, we can still praise the work."
Margolyes, whose family is Jewish, recognised the contradiction between Dickens' writing and his less appealing personal beliefs as she read Oliver Twist. She found it difficult to accept his racist depiction of Jews, like the villain Fagin.
"I had a conflict reaction and from this developed my fascination with Dickens."
She says being a woman, an actor and a Dickens fan meant it was almost inevitable that she would, with friend Sonia Fraser, eventually develop a show based on some aspect of his life and work. She was naturally drawn to the female characters she had so often played.
Despite the production's unflattering portrayal of Dickens, it obviously appeals to audiences who remain enthralled by him. Margolyes herself likens Dickens to Shakespeare in terms of his talent and influence.
She says most people, even the most ardent Dickens fans, can separate the man from his work. Besides, she's performing a dramatic and, at times, humorous play - not giving a lecture.
Since its Edinburgh Festival debut 23 years ago, Dickens' Women has been performed in Britain, the United States, Israel, Australia and India. It returns here for a second, and more extensive, tour that coincides with the 200th anniversary of Dickens' birth.
This time, it comes with a book. Margolyes and Fraser have published a volume that includes an expanded version of the script plus additional material describing his inspiration for the women in his stories.
Performance
What: Dickens' Women
Where and when: Bruce Mason Centre, May 4-6; TSB Showplace, New Plymouth, May 26