mona simpson is steve job's sister. jobs was adopted when he was born,bot in the 1980s he found his biological mother ,who told him that he had a sister. mona and steve met for the first time in 1985(when she was25and he was 30)and they became very close. They kept their relationship secret for a year until mona introduced steve as her brother at the party which she gave to celebrate the publication of ger first novel,anywhere but here.