Sexual liberation for women does not mean easy sex. It means making her own choices instead of having them made for her. So she can have casual sex if she wants, can insist on protection from pregnancy and disease, or can say no to any encounters that do not take place within a loving committed relationship.
Sexual mores have changed since the beginning of the 20th Century, and women today are largely liberated. It is permissible to talk about topics of a sexual nature and to practice outrageous sexual acts without embarrassment. This would not have been the case before the women's right movement in the 1960's.