The article makes no mention of her being exploited because of any disability or other limitation. That would be very prominently mentioned had that been the case. There would also be discussion of additional charges against the ex boyfriend depending on the statute of limitations. AFAIK every state has laws that address such a situation. That is because there are circumstances that make giving consent to sex is not possible no matter the age of the people involved.
“The article makes no mention ...”
Even in the article they say they don’t know squat about the details and didn’t bother to do any research before posting their click-bait outrage.