helloo!! ı saw your comment and wanted to add my own idea as ı actualy thought about it first too haha... and ended having some theories ! ok SPOİLER ALERT! >W<
ı believe in story Trick says ''ı have waited for her so long yet she never came'' and overall house looks abandoned in forest and kinda vintage... so ım assuming his old owner was rather existed years ago and after Trick started to live in the house himself he slowly adapted into outside world and just brought / applied whatever new into the house since at the end of story he visits our home coming all by himself so he has no trouble going outside as long as he hides his mannequin parts from public.
second choice: he just literally has no idea where she is lol ^^; after all he says they immediately left the house after he came to ''confront her'' since they immediately left without even waiting so Trick might not have any idea where she went to... because ı doubt he would stay put ıf he knew where she is XD