Your student will indicate if they feel they are lackin' in recent air experience. Not only that *chortle chortle* but their log book should be a hint too?
Why not have a cuppa tea in the club house, see if you like the 'candidate' or not, and then launch into a gentle rendition of Ex.1 of the FIC? See where they're at??
Club flying is losing it's place to money makers. There: Said it!
VFE.