I am trying to find a book that my sister is looking for. She once started reading it and then left it on a train. She forgot about it for a long time but has been wondering how it turned out. She cannot remember the name or the title. All she remembers is:


There were toys and a doll on the cover.
The plot is a married woman that fell in a sewer where she gets trapped.
Would have been published in around 1990...




Any help would be appreciated.