Apparently some of the tsukumogami created by the Mallet's power have managed to stay alive by tapping into an outside source of magic before they ran out...
Whatever the details might be, she is currently living as a tsukumogami, a youkai.
But being a jiangshi, it could be that she's still being sustained by the wicked hermit's power instead.
The reason she is coming to Higan is likely because she herself realizes this is her only chance at freedom.
I don't believe I have the authority to do anything about her.
Which means... Umm...?
What's more, we need to take that tsukumogami part into account.