Fooling the FATE

Her parents, Alpha and Luna died, leaving her with her brother alone. But before their death, they made her give a promise to help her younger brother become the Alpha of their pack. She kept her promise, unlike her brother, who sold her to one of his cruel Alpha friends. She was his slave for two years, while his brother wiped all memories about her. Her life seemed to be ruined, until her master lost a poker game and to not lose his Pack, gave her to the winner. However, to whom she was given? Is he a new master or a friend? Or mate? P.S. You can't fool the fate, can you?