Brennen by Helen Johnston

Araline has been down on her luck for some time. Left homeless by her pig spawned from hell—or in other words, her boyfriend, Giles—she’s been sofa surfing in friends’ homes.
Until new friend, Macie, offers her a place to stay indefinitely, on the condition she covers her shifts at work while she is taken to hospital for a routine operation.
Unbeknown to Araline, Macie is one of only a handful of people on Earth who protects an ancient secret. A secret that will change Araline’s life irrevocably.
Brennen has been waiting for his mate for a long, long time. Born to the royal family of Mertier, he is a prince and the next in line to be King.
His prayers are answered when he is finally sent to Earth to collect her. But what he finds is completely unexpected. Acting on pure impulse and not wanting to return home empty-handed, he makes a snap decision and takes the unknowing female with him.
Araline awakes to find herself on a strange planet, and quickly finds herself having to adapt to a new life completely different from her time on Earth.