Sounds like a strong case like the Duke LaCrosse, Casey Anthony and OJ Simpson cases.
Even if the prosecutor thinks she has a case, doesn't mean she does or that she'll win a convinction.
This is just hi profile now...so they can't disregard it. JMO
“Experience should teach us to be most on our guard to protect liberty when the Government’s purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil-minded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding.” — James Madison