Read it through once

Archer was sure that Madame Olenska's decision had not been influenced by the change in her financial situation. He knew the exact figure of the small income which her husband had allowed her at their separation. Without the addition of her grandmother's allowance it was hardly enough to live on, in any sense known to the Mingott vocabulary; and now that Medora Manson, who shared her life, had been ruined, such a pittance would barely keep the two women clothed and fed. Yet Archer was convinced that Madame Olenska had not accepted her grandmother's offer from interested motives.