Probably all you archive-trawlers take this as obvious, but the photo of Claire looks like it’s from this scene: https://badmachinery.com/comic/2022-04-29/

If the Antigrote’s photo of Claire is from a scene where Lottie was present, that’s probably an indication that it was taken while stalking Lottie.

From the angle and close-up-ness, it’s even vaguely possible that it was taken using Lottie’s phone when she holds it up in the third panel. In which case we could add “Can Hack Phones And Make Them Take Pictures” to the list of this mysterious being’s attributes.