Possible Clues:

• Absent maiden is sitting on grass
• Absent with location unknown
• What this grid's big symbol is, Across and Down
• Girl can't sing properly round church, as several lights are here
• Not where it's expected to be
• Failing to notice girl during golf
• Lost ... or, in two words, an apt description of 17-, 24-, 47- and 59-Across
• Lost, according to this theme
• ABSent
• Young lady, one no good, unable to be found