Hear what you say and of course you are right. But there's always an element of doubt and don't forget a significant number of women cannot take the pill for various medical reasons.
Her appraoch to birth control is somewhat shrouded in mystery. Most people think she never did the pill and like you say she never had her bulls use condoms. Yeah she got knocked up a few times and had the necessary done afterwards. This bull's cock is so thick and the fucking so vigorous I doubt a condom would have survived anyway! Like someone on here said her early stuff was brilliant: In this vid she's so getting off on that wrist-thick cock it is nothing short of amazing - and when he finally unloads at 43'47" she's totally away with the birds - simultaneous orgasms!