In Fury Born - David Weber

GoodReads Summary: Imperial Intelligence couldn't find them, the Imperial Fleet couldn't catch them, and local defenses couldn't stop them. It seemed the planet-wrecking pirates were invincible. But they made a big mistake when they raided ex-commando leader Alicia DeVries' quiet home work, tortured and murdered her family, and then left her for dead. Alicia decided to turn "pirate" herself, and stole a cutting-edge AI ship from the Empire to start her vendetta. Her fellow veterans think she's gone crazy, the Imperial Fleet has shoot-on-sight orders. And of course the pirates want her dead, too. But Alicia DeVries has two allies nobody knows about, allies as implacable as she is: a self-aware computer, and a creature from the mists of Old Earth's most ancient legends. And this trio of furies won't rest until vengeance is served.

★☆☆☆☆

Honestly, it could be a good story, if the spirit was removed, the backstories cleaned out, some stuff that doesn't affect anything in the long run (pointing that they happened, with short summary would suffice) and make it shorter would be a real improvement.