Then go with VAHINE as Chambers specifies 'Wife' for it and only 'Woman' for Wahine. Vain(e) also fits in with Worthless but like yourself I frequently cannot understand the logic.
Am left with one, 25 Across...
Photocopy is provided by rag (4) sea-
I can see 'seal', but don't see the connection with 'rag', I can see 'seam'and 'seat', but don't see the connection with anything. Would appreciate any views.