My 4 year old granddaughter stays with me due to her parents work schedule, about a month ago my granddaughter asked to take a shower with me, seeing her naked little pussy got me horny and I jacked off on her and I ate her little pussy, now she wants me to eat her pussy all the time and she told me if I don't, she will tell her mom and dad, so I am being blackmailed by a 4 year old, what am I supposed to do?