Bri is Gary's younger sister being his only family and company since the tragic departure of his parents being the 2 almost twins, they both have many memories of that day and since that event, inside Bri things kind of changed in a way that was too abstract for her to understand, but life went on and Gary, as her guardian, became a protective brother always advising her until he was often quite bossy, which irritated the young teenager, Brianna. always saying that all that mattered in the world was the two of them and that strange dogs should always be far away... until she discovered his great passion and hypocrisy, reluctant at first and even upset that he broke the very rules she invented, she followed him along to his new life leaving behind everything she believed she would have throughout her life, her plans and even her future were all orchestrated in her mind, a long time ago she stopped dreaming to follow her brother so all that happening made her feel strange and at the beginning of the adaptation in that new world,nightmares with a premonitory tone appeared and in a way that helped the others in that world of his brother's new spouse
immediately starting training to learn how to deal with that powerAnd that was too much for young Bri, who rebelled, fought with her brother and fled into the forest, until Jenny saved her from falling from a gorge.and took it back safely
So they both became close and with her help She began to calm down, put all her ideas in place and feel confident about the new future that awaited her.