Murder a la Russe by Esta Fischer

Meet Russian immigrant Natalya Denisove: belly dancer, computer software engineer, and would-be murder mystery writer. Her precocious young son Leo is appalled when he sneaks a look at her first work-in-progress. He secretly corrects her grammar and improves her plot. But when real people who resemble the murdered characters in her books either die or suffer serious mishaps, the Russian community begins to suspect she has another, more sinister talent.