You born and raised and raised in the muggle world, your mum is pureblood and your dad is a muggle, you knew about your mum and the wizarding world, but they wanted you to have a normal childhood, you went to nursery and primary school, like normal, until you got your letter of acceptance to hogwarts, you were so excited and your mum and dad were so proud, you started hogwarts in first year and were sorted into slytherin, your now in your 5th year.