After this?
When she saw him holding the gun something snapped inside her and she tried to attack him. The ghosts would have tried to stop her but she had already kicked him in the flank by the time they had gained their composure. Jeremy flinched and retracted himself, but did not let go of that gun.
"I know what you are capable of". She smirked at him. "That machine still works"? She motioned at his waist with her eyes. That's when everyone realized that she is aware of his medical condition and that she hit him there purposefully.
"Oh no". Ken whispered. All the ghosts excluding Antoinette seemed quite worried now what would happen next, given they had witnessed it before, until the grimacing expression on Jeremy's face turned into a smirk.
"Idiots make the same mistake twice, unfortunately I ain't one of them". He said as he straightened himself up. "Even though I didn't want to risk anything thus I took off the machine".