In Chinese mythology, a tiangou is a sort of dog that eats the sun during an eclipse. Since Audie and the sun are associated with fire, why not make Audie into a tiangou?
 
After eons of hungrily eating stars in the empty depths of space, the ethereal canine Audie has found a certain star as her nest: that star was Pyraxis B, the cremation pyre of the galaxy’s emperors. To her delight, no matter how much Audie ate Pyraxis’ plasma, it quickly regrew and never ran out, until Audie was so full that she never ate stars again for thousands of years.
 
All she does nowadays was eavesdrop on the Pyraxian Empire’s mass media, sleep on Pyraxis’ warm plasma as her bed, or chase starships that had the misfortune of being shaped like a disk.