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Updated with your feedback...Only 6D and 15A left.
6D When about fifty, she is unequalled (P?E?E??)
8D. Shown by one looking for scraps. (BELLIGERENCE)
12D Exhaused and insensitive to rhythm (DEAD BEAT)
10A Knots sailors try to avoid (REEFS)
11A Giggling drunkenly (HIGHLY AMUSED)
15A One girl that is after another (?A???E)
23A Beaten hollow (DENT)