This line makes no sense if you know that foetus is latin for infant/young offspring?
"Wombs" aren't resentful: self-pitying, self-serving hearts and minds are resentful.
To a "resentful" Nazi, a Jew isn't a person but a wad of disposable tissue. To a "resentful" lecher, a pretty woman isn't a person but a piece of meat. And in the heart and mind of a self-pitying, self-serving, resentful female, a baby isn't a person, and neither is anybody else.