[@KatherinWinter]
A Tsukumogami is a object that acquired a spirit and thus consciousness, typically after living long enough time. As for Ashley having two life times to work with is after reuniting with Ren, who was her sword in the last life, She regained the memories of her first life and some of the afterlife. She is still physically human just with more memories. I don't know if that will conflict with Sora Grimoire's Bio that implies an afterlife.