Escaping The Snake

Sandra is no stranger to snakes; her mother is a serpentologist and so was her father before he abandoned them. Her mother then fell in love with a new man when Sandra reached the age of six. Her mother and father loved her dearly, though their relationship could be tough at times, especially when Sandra would do daring things without thinking.
Their relationship changes the day she turns eleven. Furthermore, this year there is a monster set loose at the school she has been excepted to.
She is one of the people that the monster likes to target, will she escape?