SOLVED. I’m looking for a fantasy book where the protagonist is a princess. Her kingdom is attacked by a massive empire and her father (the king is killed). She builds up an army of vampires, werewolves, and snow animals (i forgot what kind). [s]

[Vincent]

Title

[Mai]

Maybe The Cry of the Icemark by Stuart Hill?
The Icemark is a kingdom in grave danger. Its king has been killed in battle, its enemy lies in wait, and its fate rests on the shoulders of one girl. Thirrin Freer Strong-in-the-Arm Lindenshield, a beautiful princess and an intrepid warrior, must find a way to protect her land from a terrible invasion. She will forge an extraordinary alliance of noble Snow Leopards, ancient Vampires, and ferocious Wolf-folk. She will find unexpected strength in her friendship with a young warlock. And she will lead her allies to victory with her fierce battle cry: "Blood! Blast! And Fire!"

Found searching online but the description matches yours!

[Vincent]

Yep that’s it. Thank you!

[Kris]

A popular book - it's been requested and found 11 times in this group.