Donna sighed, seeing the girl's tears. So maybe she'd been a bit harsh- she was stranded in the past with a Doctor who wouldn't find her and no one who knew her name. She was allowed a little harshness. "Sorry. It's just- well, it's tough, traveling alone."
"Yes, I am white, and yes, I can type, and yes, that means it's going to be easier for me. I'm sorry, and it's not right, but again- not a lot I can do about the sixties, is there? I'll look out for you- we can look out for each other. And the girl at the Welcome Center might be able to help with all that nonsense." Donna had just turned up at Wayne Industries and started working, since she was qualified. It wasn't like temping (which is what Donna was considering this) was different from one place to another- office gossip, catty women, climbing the ladder. Only difference is that climbing the ladder here meant marrying up.
"No. July 12th. We've got time. You won't be living in Harlem, I promise you that." Even if the girl was being abrasive- and yes, she probably had reason to be, but Donna didn't feel all that charitable at the moment- she wasn't going to let anything happen to a friend of the Doctor's, not on her watch. She could only imagine what he'd say if she told him she'd let Martha Jones get killed in a race riot.