A 30-year-old South Carolina mother will spend the next 35 years in prison for suffocating her two sons, then putting them in her car and staging a crash into a river after a fight with her mother over her parenting skills. Shaquan Duley said nothing during the less than 10-minute hearing Friday except a quiet “yes sir’’ as Circuit Court Judge Edgar Dickson asked her questions about the day in August 2010 she killed 2-year-old Devean and 18-month-old Ja’van by putting her hand over their mouths.