Okay, so they aren't just traveling in a wad of dark, they are having a fight. She feels many fewer qualms about sending capes and monstercreatures all to sleep and notifying the local PRT.
The local PRT is perfectly happy to collect them. The Undersiders have been excessively slippery so far, and their opponent was more of the unstoppably powerful variety. It would be a very good idea if she didn't wake up until thoroughly contained; how long does this last?
She can turn it into a curse that'll last until somebody prods them with a particular doohickey, if that's particularly called for?
PRT personnel are on their way in either case.
Kithabel leaves the asleep capes and a curse-lifting doohickey that can only be picked up by people in PRT uniform and then departs.
The PRT usually prefers it when capes stick around to describe everything in detail, but they got the most important information and this isn't exactly unusual.
Someone shouts "she didn't fall? Inconceivable!" before being drowned out by an assortment of other powers and, of course, bullets.
Now she's insubstantial and the guns stop working in case there's anybody substantial. Sleep sleep sleep -
Something jerks her downward, which affects her despite her intangibility, straight toward a mess of translucent blades, which don't. Everyone she knocked out stirs, and many of them get back up. The scream starts again, and again nothing happens.
She puts the sleeping people to sleep harder. What might be stopping her from seeing other people - invisibility, walls - she focuses on her eyes while fighting the pull towards the blades just for the sake of it.
This time people stay asleep. The remaining conscious capes fill the area with everything they've got—force fields, snow, whatever form of telekinesis that was, and so on, and yep that one's blood—and one of them starts trying to pull the dog monster away from Kithabel.
The dog monster can be stuck very firmly in midair. The blood can stop existing. The snow can get turned into a scale model ice sculpture of Brockton Bay. The force fields aren't troubling her, but everybody can go to sleep now.
Good. If that doesn't clear away the force fields, she'll do it herself. And then she notifies the PRT. Again.
"The Teeth attacked you? I was expecting them to try a rescue. How many?"
"Total of eighteen people, fiveish capes or maybe fewer if one of them was doing two different things."
"There are others, then. They're unlikely to attack you after this, and if they do none of them is particularly resistant to being put to sleep, but it might be a good idea to stay intangible as long as you're here."
And Kithabel goes back to what she was doing. Insubstantially. It's not the most comfortable, but it's all right.
It's after a day of stuff-doing that Kithabel, while sufficiently noticeable, gets approached by four other capes. One in purple, one in armor, one covered in insects, and one translucent. "Interested in a trade?" the first one asks.
At that comment, the figure in the welder's mask spins her head toward the speaker, who smirks.