Publisher Kluitman the last secret

Isa's life is suddenly turned upside down. She seems to suddenly lose everything she loves: her grandmother's cozy farm, the horses that Isa is so crazy about, and Omi herself, who she could always count on. Isa would prefer to seek comfort from a horse with which she feels a special bond: Randalin. But that also seems to be taken away from her. Before Isa fully realizes what is happening, she travels with her grandmother through wild, unspoiled Iceland in search of a secret from Omi's past. But is her grandmother still capable of making such a journey? Will they find what they are looking for? And what will Isa's life be like when they get home?