It was hard to describe, I know, so it kinda came out crummy on my end
What I had meant was that from perspective of the White Rose Cafe, there's about two small blocks down before one of the old parts of the city starts, there, in an alley the portal opens up. If the girls would walk out of the street they'd come upon the actual used part of town.
The DD Girl isn't in that alley yet, being a street away from it all, or a few steps to put it simply.
As for Darkie's post where Chibiusa mentioned the White Rose Cafe, she was correct there. In my post I had Pluto tell the girls they had to find that cafe, and find her cousin Ryu, so she wasn't just magically knowing something she otherwise couldn't have known :) But details like that sometimes accidentally can get skipped.