SOLVED: HR, hero comes to marry heroine in convent, as ordered by her father, but he's really her fa

Maybe this Medieval...

Isle of Lies by Donna Fletcher (3/02) [Scottish - 1]

Clan loyalty has forced her to marry...

Moira Maclean has spent most of her life cloistered in the solemn halls of a Scottish convent--and has only ever known her father's iron will. So when a handsome warrior barges in with news of her father's dying wish--that she marry this stranger on the spot--Moira knows that duty has her bound.

...but can it force her to love?

Soon Moira realizes the folly of her haste: that her father sent no such message, that she has just exchanged vows with her clan's own enemy, Ian Cameron Glencoe. Left behind at the convent, she discovers she carries his child.

A silver lining

But all is not bleak in the foggy Scottish moors: Ian returns to take his bride home, leaving rumors that her life is in danger--but is it from her father or someone else? Ian recognizes in himself feelings he thought he'd never feel again. And although she, too, thinks herself impervious to the emotions of love, Moira may well be in for a surprise...

—Janie