I live in York. It's not big, but it's lovely.
Pairings is very nice. I've only had wine and hor d'oeuvres there but they might offer more substantial plates.
I always recommend Il Paradiso del Cibo, an Italian restaurant which is only 5 minutes from Piccadilly.
It's an authentic Sardinian place, totally informal with the best specials board ever. I never eat off the menu!
She must book though. Mention my name. I'll PM you if she books it.
A great place for cocktails would be Sora, the sky bar at Malmaison. It's probably about a 10 minute walk from Piccadilly.
Anything else, just ask.