In Chapter Twenty-Three, how does Bri react when her grandmother insists on her coming to live with them, and why is it important to Jay?

In Chapter Twenty-Three, Bri insists on staying with Jay and Trey when her grandmother insists on her coming to live with them. This is important to Jay because Jay knows that Bri is still hurt by Jay's decision to leave Bri and Trey with their grandparents when Jay was struggling with drug addiction.