Winter time at Hogwarts

Winter is a true Slytherin and proud of it. She is cunning, cold and calculating and is an expert at making money- all before she is eleven years old, but her first year at Hogwarts somewhat complicates her life as she has to deal with bullying Gryffindors, an interfering Umbridge and personal problems at home. Please review. I'm still learning to write and would love some advice.