By David Magil (?-?).
First appearance: Worlds of IF, July-August 1973.
Short story (13 pages).
Online at Archive.org (HERE).
(Parental caution: Some mild expletives.)
"Such a disorderly young lady! How come she was working for law and order?"Detective Mike Winsor's humdrum life is going along about as badly as could be expected until he has a very close encounter with an eye-achingly gorgeous baby-doll ("Hi") who really, truly needs ten million dollars and—perhaps more significantly—absolutely refuses
to stay dead . . .
- David Magil's minuscule ISFDb bibliography is (HERE).