My Alien King

Amelia Hatcher has been suffering from migraines and holes in her memory for as long as she can remember. Sometimes she'll fall asleep in the living room and then wake up in her bathtub with no recollection of how she got there at all. After years of this, she gets fed up and finally seeks out a doctor, one who tells her that she's probably not crazy and is definitely being visited by aliens. 

Mia's not pleased at the thought that she's being mocked by a healthcare professional who she came to for help, but it's much harder to doubt when she wakes up to find a strange man climbing through her window, and telling her that she needs to come with him right away. 

Of course, the fact that several definitely not human looking things make their appearance soon after does a lot to make her believe, too. 
She never asked to be singled out by a runaway king and his princely nephew, but she's about to be offered a stunning opportunity to change her life forever.