The Unicorn Keeper

On Wulfric Kennetson's Highland estates the year is turning. Wulf has discovered that Morag & Boyd's father's illness can be treated with a tincture of unicorn eggshell, but they're running out. Although Wulf has a male unicorn, now looked after by Morag, these animals are rare and finding a female is complicated.
Thankfully Wulf knows of a woman who keeps such a beast. She's married one of the selkie people of the Isles. On the plus side, she's mother to Van, Peat and Russ. But her new husb...