Unfamiliar (Unfamiliar Series #1)

I will be posting this story on Royal Road within the next week or so after I have passed the approval process. My name on there will also be CatLegis. Kara thought that going to a boarding school for witches would be hard. But when she's framed for murder, she must clear her name before the murderer can strike again...

Paladin

Sam is the most promising swordsman among this year’s crop of Paladin trainees...and knows it. Brash, cocky, and unbeatable with a sword (well, almost), Sam is the kingdom of Thule’s best hope against the violence wrought by demons. The only problem is that Sam is really Lady Samantha, daughter of the seventeenth Duke...