Davies, the first woman to tee off in a European Tour event, missed the cut after placing 154th through 36 holes in the 155-player ANZ Championship.
A former Player of the Year on the LPGA Tour, Davies opened with a respectable 3-over-par 75 on Thursday. But she scuffled to a second-round 83 that translated to minus-12 points on the Modified Stableford Scoring system.
"It just wasn't meant to be, was it?" Davies said. "I still feel I could have done a lot better, but I'm glad I did it. At least I had a go."
The 36-hole leader was Steve Webster with 27 points.
Only Australia's Shane Tait, who was bothered by a back injury, finished behind Davies.