Harry Potter Third Year, Minor Character Deaths

“MARGE!” yelled Uncle Vernon and Aunt Petunia together as Aunt Marge’s whole body began to rise off her chair toward the ceiling.
She was entirely round, now, like a vast life buoy with piggy eyes, and her hands and feet stuck out weirdly as she drifted up into the air, making apoplectic popping noises. Ripper came skidding into the room, barking madly.
“NOOOOOOO!” Uncle Vernon seized one of Marge’s feet and tried to pull her down again, but was almost lifted from the floor himself. Rowling, J.K. Harry Potter and the Prisoner of Azkaban (p. 12). Pottermore Publishing. Kindle Edition.

Both Marge’s and Dudley’s faces were purple from stress and Dudley was grasping his chest and hyperventilating unseen as everyone watched Marge bop along the ceiling.
Vernon wasn’t much better as he fought to get his sister down while fighting off the damn dog at the same time. The exercise and stress are getting to him as well.

Marge is the first to stop screaming, then Dudley goes quiet as she comes down from her inflation. Vernon is cupping his chest as he turns to a pale Harry, takes one step, then falls to the floor, unconscious. And Petunia’s eyes just roll into her head as she follows.

Harry just sits on the floor by the kitchen door as several pops announce the arrival of ministry workers. Never mind Hogwarts, it was prison now as he had accidentally killed his relatives. And he went catatonic at the thought. Living in his mind, happier times where he was with his family and loved.