Officers arrested a woman Tuesday morning in the Yesler Terrace neighborhood after she assaulted a child, spit on a bus driver, and stole the keys to the vehicle before fleeing on foot. Police were called to the intersection of Broadway and Yesler Way around 8:45 Tuesday morning for a report of a woman acting erratically on an occupied school bus. Police arrived and spoke with the 12-year-old victim who said she was at the bus stop waiting to go to school when a 44-year-old woman approached her. The victim said the woman began yelling at her and then struck her three times with a plastic water…