SPOILER ALERT: Plot Revealed
Copied from Wikipedia 
Sabriel is the protagonist of the first novel. Sabriel and her mother died shortly after birth, but her father, the Abhorsen Terciel, retrieved Sabriel from the hands of the Greater Dead Kerrigor in Death. By her father's wishes, Sabriel grew up in Ancelstierre after living a few years in the Old Kingdom with her father. Shortly before she was to graduate from her school, Wyverley College in Ancelstierre, a Dead servant of her father's gave her his bells and his sword. She interprets this to mean that her father is trapped deep in Death. She returns to the Old Kingdom to save her father. She soon finds that she is not nearly skillful enough with magic or knowledgeable enough about her homeland. At the Abhorsen's house, she meets Mogget, and it is only then that she learns that there has been no king in two hundred years.
The house is besieged by dead. Sabriel escapes by calling a flood and flying away with Mogget on a kind of magical airplane, a paperwing. The paperwing crashes, and Sabriel finds herself in the graveyard of the royal house, where she frees Touchstone from imprisonment as a figurehead of a ship. They continue to the former royal city, where they find Sabriel's father's body. She brings him back to life, but he says that he will not be able to stay long and she must be Abhorsen.
Nineteen years after the events of Sabriel, she has married Touchstone, and after he was restored as the King of the Old Kingdom, she became his Queen of the Old Kingdom. During Lirael, she is rarely in the palace or with her children Ellimere and Sameth; her duties as an Abhorsen correcting the two hundred years of the interregnum keep her busy. She is very rarely seen during most of Lirael and Abhorsen.
At the end of Abhorsen, she is one of the Eight who bind Orannis; she wields the bell Saraneth the Binder (the preferred bell of Abhorsens).
|Name||Relationship (in which Book)|
|Touchstone (Torrigan)||Husband (in Lirael & Abhorsen)|
|Prince Sameth||Son (in Lirael & Abhorsen)|
|Princess Ellimere||Daughter (in Lirael & Abhorsen)|
|Kerrigor/Rogir||Brother-in-law (in Lirael & Abhorsen)|
|Lirael||Sister (in Lirael & Abhorsen)|
|Terciel||Father (throughout - dies in Sabriel)|
|Mother-Sending||Mother (Assumed) - (Dead Pre-Sabriel)|