Gotham, One Mile Up
Take this from the Timekiller's perspective: You're working hard to try and do a good thing, and this guy shows up with eyes glowing read, immediately accusing you of being somehow involved in the device under your feet, just because you're standing there. Now, Raimi didn't personally know Jon specifically, but again...avid Batman fan. She knew the Supes when she saw 'im, and the S don't lie. She didn't know as much about Kryptos as much the extended Batman family, but this had to be one of 'em, which said one thing very clearly: Red eyes mean sailors take warning. He had the heat beams primed faster than Cyclops during an eye exam. It was fortunate that her antics and her sudden shift of the time field to include him in it delayed his action long enough for the guy to reconsider. That being said, it was irritating that the walking WMD assumed there'd just be a random villain walking around here.
When he'd put away the potential for searing beams of death, the S-Man agreed to work together. Raimi was making sure to regulate the field they were in carefully. The way this place rotated to spread its weather disaster, having some of the strut they were on in too much of said time field would cause its physics to swing out of control from the rest of it. She was already starting to hear a slight creak under her feet, hence why she was focusing a little on it. The Supes' intentions were fairly straightforward, destroy or get rid of the device quickly, hopefully minimizing the damage caused by either action. Raimi, who'd seen a few nasty devices like this (and a TV shows to boot), had a feeling it wasn't as easy as that. Honestly, she was surprised this Weather Wizard hadn't installed some kind of security system on his machines. Then again, it was pumping out frozen hell at a rate most humans would find unapproachable. Still...
"The way I see it, this thing's manipulating all weather and air currents in the area to design. I don't know how it works, but I'll bet moving it without disabling the thing or trying to blow it up causes everything to go berserk. I was going to find and short-circuit the power supply, then slow it down when it falls out of the sky so wherever it lands, it's as harmless as a leaf."
She raised a taloned finger, then, with a smile.
"If we do it like that, the computer will still work and we can take it to someone to track down your Weather Wizard. The rest, you can compact to the size of a pea, for all I care."