[philman_36]

Oh. look! I found her whole paper!
http://georgetownlawjournal.org/files/pdf/98-3/Prewitt.PDF
Pregnancy from rape¹ occurs with “significant frequency.”²

1. For the purposes of this Note, the term “rape” refers to circumstances in which there has been sex without consent as claimed by the assaulted woman; it does not necessarily mean that the perpetrator has been tried and convicted of rape in a court of law.
2. Melissa M. Holmes et al., Rape-Related Pregnancy: Estimates and Descriptive Characteristics from a National Sample of Women, 175 AM. J. OBSTETRICS&GYNECOLOGY 320, 320 (1996).

Well that explains a lot!

[philman_36]

Thus, the stranger-rape prototype both initially and continuously “infect[s] legal judgments about criminality and victimization[,] . . . prevent[ing] many date and acquaintance rapes from being classified as ‘real rapes.’”⁸⁷ As a result, it has “transform[ed] rape from a pervasive phenomenon into an isolated one.”⁸⁸

The footnotes on that page are rather interesting...
86. Susan Estrich, Rape, 95 YALE L.J. 1087, 1092 (1986). Explained another way:

Yes, that Susan Estrich.