They're free on Gutenberg...
Her eugenics stuff, yes, fascinating. It was v up to date at the time, only recently published. You can google it under Kalikak.
Horrifically, the research on which it was based was deliberately flawed; he ignored a substantial proportion of the family. Less culpable, it's likely that quite a few of the individuals concerned were affected by fetal alcohol syndrome, not known about then.
So yes, disturbing. But even so there are genetic carry overs, and she was right to say that some institutions and individuals are not compatible.
I agree about the freedoms. That's noted also in a previous generation by Trollope, I think, who points out that American girls have freedom but when they are married, settle down; the reverse is true of the English ( upper classes, and by implication he includes sex after heir and spare).