"He's going for Castrovail, instead of the other food," she reports. "I don't think we'll be able to satiate him inside Creation."
Without fixity fields to move Him, they really have no way to control Rovagug short of tempting Him. So the best they can reasonably do is tempt Him somewhere that He won't destroy anything they care about.
Fortunately, the universe is vast.
Greatest Teleport can take the user about a tenth of a lightyear. Time Stop accelerates things at a rate of ten million to one for several subjective hours. Combined, a probe large enough to cast both continuously can move thousands of lightyears per round.
With the price of probes dropping, they have launched many. Some to survey nearby space, and some to survey further out. She takes the end of a wormhole that stretches from near-Sol orbit to one of the probes that has passed the cosmological horizon, and brings it into Creation.
Wormholes are expensive to maintain, with the cost scaling with the fourth power of their radius. Mostly, they use pinhole wormholes to keep just enough connection for fixity fields to work. The largest wormhole ever tested before contact with Golarion was approximately two meters across, and cost ruinous amounts to keep open for a few seconds.
She pumps energy into the wormhole, inflating it to several times the size of Jupiter. Viewed on a macroscopic scale, it is like looking through a fisheye lens from every direction -- a spherical region of space that plays strange tricks with light.
Beyond it burns a star.
Not a star of Creation, a planar rift through which light pours, no more massive than a hole in a lampshade, but a star of hydrogen and helium. It burns bright blue, a stellar furnace larger than the mass of everything in the Golarion system combined, many times over.
Weeping Cherry waits to see if He takes the bait.