I think her first mistake was swiping right inside a Walmart. That kind of risk taking can only translate into one thing: "your 17 inches of combo wieners doesn't phase me, please man up and turn my kidneys into a box of Idaho spud's classic mashed potatoes". Invitation accepted.
AKA "How to fuck teenagers for 60% off." So a little burnout QT3.14 thought she could get some extra weed money for some anal. Only problem is she's never done anal and has no idea the hurtin' she's in for.
If you get aroused to non-consentual incest porn, you probably shouldn't tell anyone because you have a serious personality disorder and you probably come off weird already and have no idea.