No, it just manifests inside her Devil-Domain - it is one of her souls, after all, and her Domain is essentially a sanctum nestled within or around her soul-structure, powered by her Exaltation. Her sapient mind is her hun, and in her Devil-Domain live her po, Dulmea (her Coadjutor), Echo (her Fifth Soul) and Rathan (her Sixth).
She met her po just after she looted literally everything not nailed down, plus the things that were nailed down, plus the nails from her Past Life's tomb, and it promptly stole it all and hoarded it possessively. When Keris went to get it back, she found that:
a) The po is the Id; the seat of her power, the source of her instincts and her capacity for true depth of feeling. Thus, the more possessive and angry about it taking her stuff she got, the more possessive of said stuff and angry it got.
b) Her po in particular manifests as a sixty-foot razor-feathered quetzalcoatl made out of blood-streaked silver, with green-burning eyes, wings the length of a schoolbus that can each cut through a building and very, very poisonous fangs the length of her arm.
Needless to say, Keris did not get her stuff back. And Dulmea had to rebuild quite a lot of the Domain's buildings. And Keris was grumbling for a week or so, and has been referring to it as "the bitchy snake" and similar epithets ever since.
Truly, she is the very model of a stable and harmonious soul hierarchy.