Harry Potter and the Heir of Gryffindor

This story by Venus starts in the summer after Harry’s forth year with the moving in of new neighbours. The mother is a witch. Back at Hogwarts they discover that Sophie was hidden in Hermiones trunk. Since the trunks are airtight she must be magical. Sirus teaches Defence against the Dark Arts alias Simon Grey. Hermione becomes part of a student team that participates in an inter house study contest. Ron gets in as a backup. When Malfoy provoces Hermione she attacks him and they both are kicked off the team. Therefore Ron is on the team. Sophie plans a birthday/chrismas party to be attended with company to get Ron and Hermione together.
While on the yearly field trip Voldemort frees Azkaban and attack the camp. All but Harry, Ron, Draco, Snape an Warwick can escapt to school. The five tramp through the Caledonean Forest to an Elven Cove where they stay for the night. The following they they track down Orod the Gryphon but are ambushed by Delphie – Imeldas twin sister. She has collected Sophie and Imelda whom she kills. Snape manages to kill her but then Voldemort and the Death Eaters arrive. The rest magages to get away.
When Harry returns home Sophie tells him that she and her father are moving back to London.
The story is available as PDF.