Where does Isabel go when she runs out of the Lockton's house?

Isabel leaves the Lockton home and goes to the Bellingham's home. 

A bit earlier in the novel, readers learn that the Locktons are British supporters. At that time, the Bellingham's servant, Curzon, asks Isabel to spy on the Locktons and report to him anything of interest that she hears or sees.  The offer is tempting, because it offers Isabel the chance to earn her freedom back; however, Isabel refuses to do it.  

Isabel changes her mind about spying on the Locktons after Madam Lockton makes Ruth the equivalent of a pet.  Isabel witnesses Mr. Lockton holding a secret meeting with other British supporters, and she overhears some valuable information.  Isabel risks leaving the Lockton home that night in order to report what she has seen and heard to Curzon.  Isabel believes that her information should earn freedom for her and Ruth right away, but Curzon tells her to return home and wait for further instructions.