This is again a bourgeois feminist belief of the early 20th century. Sex for procreation, within marriage, was a positive force. This undercuts the belief that sex was universally seen as sinful in the late Victorian/early Edwardian era; however, it must not be mistaken for modern second-wave feminist arguments for more radical sexual freedom (though there were a small minority of radical feminists at the time who advocated for that, as well.)

This implies that women are naturally sexual creatures; this reflects the view of early feminists, which eventually became subsumed into the project of marriage.

According to this text, the most important goal of female life is childbearing (passing on good genetics) and childrearing (passing on good behaviours). Female worth is equated with motherhood, both biological and as a practice.

This is a mild example of eugenicist thinking. The belief that people should make matches with the goal of passing on desirable traits to children, thus improving "the race."

"Worth" here seems to be intended to refer to intrinsic/genetic qualities, but these qualities were often related to class - and, as such, often related to money.

This puts the decision to get married and to have sex firmly in the hands of individual women - not in the hands of their families or of society. However, as we will see, women are expected to consider social and familial realities when making their choice.