It looks as if the whole family returned to Bedford between 1894 and 1897 (but strange that there seems to be no 1901 census record). After this time, Cedric is born in Bedford in 1898 and by 1911 William has died. By 1916 we know that Cedric has gone to India to join the Indian Army (seems a long way to go and "do your duty" rather than pop down the road to the local recruiting office) My hunch is that there was an uncle or other family connection still in India. There are a number of Bakers that pop up in the regiments history. Also at some point Frederick has returned to India as well.
Mabel's address on the 1901 census (the Freeman's) is only about 1/4 mile from the address on the 1911 census so there must be some link I believe, but it is still a bit of a mystery as to why Mabel would be staying by herself. It could be that the others went off somewhere in the meantime and left her temporarily in the care of some friends?