This excerpt is from a 1901 book I found while antiquing this week - What a Young Wife Ought to Know, by Mrs. Emma F. Angell Drake, MD.

But there are certain characteristics, certain soul-possessions that every young woman, if she herself be really fitted for matrimony, has a right to expect; nay more, to demand, of the man she chooses. Discovering that these are lacking, let her not cheat herself with the belief that she can, after marriage, school him in these missing qualities until they are fixed traits, for the rule does not read that way. The time for easy implantation of fixed characteristics is gone, and whatever is now taken on, is apt to set uneasily. What sins and gross faults are coaxed down after marriage are very apt to leave glaring scars, both in the husband’s character and in the wife’s soul. (Pgs. 59-60)

Dr Emma Drake (b. 1849) was a graduate of Boston University Medical College, and professor of obstetrics at Denver Homeopathic Medical School and Hospital. She was the author of a series of books on sex, childbirth and obstetrics, several of which were published under the auspices (endorsement) of Sylvanus Stall (1847-1915), a Lutheran pastor most famous for his 1897 sex education and anti-wanking book What A Young Boy Ought to Know and its many sequels. She may have contributed to the formation of the euphemism “the birds and the bees”. I could not find any other information on the author’s life or death.