"There is an alley just to your left," she answers with an arched eyebrow. A part of her is saying it only as a challenge, wanting to see if Bucky would ever take her up on it, because she's not sure he'll be willing to take the risk.

For Sylvie, an alley would be as good as nearly anywhere. For so long, she had no regular access to privacy, to beds. Honestly, our of sheer frustration, she'd likely have fucked Loki on that train had there been more time and a bit of privacy.

She'll just as happily take Bucky in the alley.