What Gala felt was not love but affection. It was the same feeling one would have toward a friend or even family. Gala had never felt such a way toward anyone since her mother died, but her master was closest to being family than anyone after he found her in that forest.
That incident happened in one of Freda's forests, at the peak of the witch-hunt at that time. The king placed a reward for every crystal retrieved from the witches, which pushed the race toward almost extinction.
Her mother had to give away her life for Gala to live, but as a child, she couldn't get far before she was caught. It was at death's doors that her master appeared to kill all of her pursuers. As a child who met her savior, Gala became attached to the man.