Moss, from York Ladies (Clifton) finished runner-up 12 months ago but won 3-2 against Stillington's Jess Watson (10-8, 2-9, 9-2, 7-9, 9-2) in this year's final.
Meanwhile, Watson's younger sister Ophelia, 13, beat Wigginton's Deborah Harvey 3-0 in the Plate Final (9-1, 9-6, 9-7).
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