This is based on the book The Isle Of The Lost. When Mal stops Evie from touching the Dragon's Eye and she ends up touching it, the curse doesn't recognize her blood and the curse is placed on her. (This isn't true but I'm going with it -->) Her sixteenth birthday was a few days after she would arrive in Auradon, she will prick her finger on a spindle and fall into a deep sleep for one thousand years only to be awakened by true love's kiss. (I do not own anything but part of the plot! Don't read the tags or else it will be a spoiler!)