Northern Magic — Laura Strickland

When Santa asks his worker, Olja, to help make another elf's Christmas wish come true, she believes the job calls for a love potion. Brewing it up will require her to travel all around the North Pole gathering unusual supplies, and to take a few dangerous risks. But she's never failed Santa in the past and doesn't intend to now.
Elf Runi's in the business of guiding Santa's sleigh and making other people's wishes come true. This year he's dared make a wish of his own, one from the heart. When he meets Olja, he hopes he's found his forever. But it will take assistance from a reindeer, a generous helping of love and a whole lot of magic to make his wish come true. That is, if Olja and Runi can just outwit the three troublesome trolls who decide they'd make a fine winter's snack.