She is the older sister of two siblings: her brothers Isaiah, and six year old Brice. Her parents were passionate protesters against Lord Voldemort, leading to their deaths when Bridget was about eight years old.
Bridget's older sister, Donna Shacklebolt, was against Bridget getting sorted to any other house than Gryffindor. The older sisters aversion got only stronger, when ex-'boyfriend' Charlie Plex, threathened to take his revenge on Bridget.
Bridget did, however, get sorted into Ravenclaw, after Donna told her that she didn't care, and has later been harassed multiple times by Plex, whom has spread rumors which made Bridget act irresponsible and therefore got a detention.