In the 1891 census the "Boarding school" was at 11 Devonshire Rd. Broughton and underneath the address was written Girls Home.
I have just looked at Slaters Manchester and Salford Directory for 1895 and 11 Devonshire Street, Broughton came under the heading of Orphanages &c. Below was written "Girls Home, 11 Devonshire Street, Higher Broughton".
Regards,
Mo