Death was a constant companion in Harry Potter, and author J.K. Rowling displayed it on many occasions in the Harry Potter universe. From fan-favorite Sirius Black to the most tragic demise of Albus Dumbledore, Warner Bros.' Harry Potter movies managed to encapsulate the tragedy that went alongside death in the Wizarding World. However, Lavender Brown's death in the movie did not do her character justice.
Source：https://www.cbr.com/harry-potter-movies-biggest-unused-death/
