Yes, actually. My school's volleyball club had a fellowship in Inaba last summer and we stayed at your inn. ...It seems like it's been a few more years for you though, so I'm sure you wouldn't remember.

[The inn gets thousands of customers, so it'd be unreasonable to imagine Yukiko would remember a random girl she met for a few minutes. That is, if she's even from Minako's timeline at all... but she's not going to bring that possibility up.]