I believe that Fay's Center is over the narrow passage of land in Hati's SW corner. If you watch the visible loops this becomes evident. Also if you go back to IR, Fay's coldest cloud tops are warming pretty significantly. At the edge of the island on that peninsula is a 12,000 ft mountain. If Fay's center passes over that, it's likely to do some damage. If the COC can stay north of that location, she may survive with little more damage than has already been done. Should know in the next few hours what kind of impact Hati will have on Fay.