In details what occurred between Kam, Willie, and Lacey at the bus station, when Willie first arrived in Oakland?

In Chapter Twelve, Willie wakes up to find that the bus driver, a muscular black man named Lacey Casteel, has come back to help. He fusses at Willie for being out so late at night in this part of town, and for riding his bus, but he takes Willie with him to ride out the rest of his route.

Over breakfast at a diner at the end of his shift, Lacey explains that he didn't help Willie before, because Jo boys isn't just a group of boys; it's a street gang that will kill a person. Lacey does not explain why he turned around and came back to see about Willie.

After hearing Willie's story, Lacey offers to pay the bus fare to send Willie home, but Willie asks to stay at Lacey's place for one night. At first, Lacey refuses, because he does not want to attract the attention of the police by harboring a runaway. Then, he relents and says Willie can stay for just one night. Still, Willie has gotten good at reading people since the accident, and he senses Lacey feels for him, though he does not know why.

The next day, Willie sees why Lacey does not want to attract the attention of the police. He is a pimp, though he calls what he does human relations management. Lacey agrees to let Willie work as his housekeeper, on the condition that he keeps his eyes, ears, and mouth shut, that he goes to school, and that he not ask Lacey why Lacey's taking him in. Willie agrees to everything.