Blue and Roxas could have met a little barely? Blue's mother works as a medic, not in the psychiatric ward but. Blue might've been around there a few times. Not much. If you might want to think they've seen each other before.

Regardless, Blue here doesn't mind meeting and chatting to people, even if they're quiet/slow on adding to a conversation. And if Roxas ever needs somebody to go outside the Union with, Blue will be happy to take him with her. \o

But we can discuss this more if you're interested.