Maria wants to get something to spice up her cupboard, so she wants you to get her to the dealer's at Chinatown.
She's Mine Now!
Get over there, and you see a Sindacco Argento. Toni comments on this looking like it's gonna turn ugly, but Maria thinks otherwise. After getting in the car, they drive off with her and you've gotta save her. Bash them around until they exit, kill them and then Maria climbs in the back. Take her back to the apartment.