Minato doesn't look drastically different aside from age compared to when he was younger, so Katherine could definitely recognize him from that nightmare and know his name/relationship with Minako! He never got counselling after that car crash and internalizes a lot of his stresses (don't we all...), but he's doing distance education right now and isn't a RU student until next year, so he probably wouldn't be able to have sessions with her until then?

Expressive is something we can definitely do, though! If she comes in on a regular basis and orders the same things each time, he'll probably learn what her usual orders are and have them ready for her! He would also be very excited to see her dog and dragon and eagle, omg