Well, she could certainly do that; Petra's hands eagerly began to 'study' the breasts of the woman riding her, which wasn't easy as they were bound.  Still, she'd maul the writhing woman's tits best she could, while bucking into her.  It was rough, to say the least, and with that finger in her ass and on her balls she was wondering if she might accidentally rip something off during it... but she kept on at it, grunting and thrusting for all she was worth while letting the woman on top have her control in the situation.<br/><br/>At least, until she was cumming, spraying her quim all over Petra's bare abs, filling in every 'crack' in the chiseled bits.  That, and violently fucking her ass and balls with her hands, driving Petra herself wild.  She thrusted up into the cumming woman, once, twice, thrice... and right as she was spraying her copius cum into the woman's cunt, she undid the rope around her hands, the rope being readied as her own white spunk seeped out around onto her balls and mound...<br/><br/>And with those hands she forced the woman off of her, and thus off her cock.  As ordered, it was time to fuck those big, 'oily' tits... after she'd mounted the woman (whose pussy was leaking cum and quim onto the bed in copious amounts) and wrapped a quick loop around to bind her hands above her head.  Not hard to do; she was quite a strong woman after all...<br/><br/>"Like I said; I'm going to defile what's left of you!" she cooed out with dripping amounts of seductive malice (feigned, of course) "I can see two things to defile easily enough..."<br/><br/>And slapping her pussy-and-ass-soaked cock between her tits unabashedly, she grabbed those tits and forced them together tightly, wrapping them around her thick meat-rod... and then without hesitation she went at it, thrusting into those big, fat tits of hers.  The oily skin was... different, but in a good way, better than average tits she'd say.  That, and they could take a beating, which is good because with how she was thrusting into them a normal woman would be in pain... and even Scia's might be sore after this.  But the woman - Petra gathered - liked things kinky and rough, so that's what she was doing: 'defiling' those big, lovely, scaly tits of hers with all but thunderous slaps of her nuts and thighs against sot flesh...