Accident
He didn't mean to. Everything was moving so quickly and she was on his tail and that blast he narrowly avoided threw rubble everywhere and he only threw that ectoblast back at her to put some distance between them but it went too high and hit some of the rubble and exploded it around them and some of it clogged the engines in her sled and by the time he knew what was happening she was halfway to the ground.
And he tried, he really really tried to catch her, but he was just a bit too slow and it was like Emma Stone hitting the ground in that movie except this wasn't Emma Stone this was Valerie and this wasn't a movie this was far too real he could smell the dust settling and the ectoplasm burning and the blood leaking from her suit even if he couldn't see it yet and he could see her eyes through her visor staring at him in permanent hatred and fear and oh god she was dead she was dead Valerie was dead—
Ectoplasm formed above her body— a wisp at first, but slowly growing to form a ball, and then a human form on a two-pronged sled.
"V–Valerie?" he asked, his eyes wide, wiping away glowing tears.
She opened her eyes. Looked at her glowing arms. Then looked down at her body.
"Am I... dead?"
Then her eyes turned to Danny. They burned red with hate.
"You..." she hissed. Her voice echoed, and it was the most terrifying sound Danny had ever heard. Red ectoplasm formed around her balled fists.
"I am going to hunt you for all of eternity!"