What happens to Winter when she and Bullet stop in Brooklyn to leave his car before their trip to Baltimore?

When Winter and Bullet stop in Brooklyn to drop off his car before their trip to Baltimore, Winter is very nervous. She doesn't want to run into any old friends or family, plus the streets are full of fire trucks putting out a fire in an apartment building. Bullet leaves Winter alone in the car for a few minutes while he takes care of some business. Winter's mother comes up to the car looking for drugs and is happy to see Winter. Winter refuses to acknowledge her mom until she shows her letters she has from Santiaga to Winter.