After leading at quarter time, the Magpies failed to score a single point until nine minutes before fulltime as they slumped to a 3.1 (19) to 5.6 (36) defeat on Tuesday night.
They remain winless after four matches, with only percentage keeping them clear of Western Bulldogs in last place.
And their misery was compounded when Davey was forced from the field after a head knock in the second quarter and failed to return.
Collingwood will be without their influential ruck rover for the next two matches due to concussion protocols.
Bri Davey came from the ground following this marking contest.— AFL Women's (@aflwomens) #AFLWPiesEagles pic.twitter.com/FJkBZKAw3JSeptember 17, 2024
Defensively, the Magpies were much improved on their previous two outings, having conceded more than 70 points against the Brisbane Lions and Hawthorn.
The Eagles started slowly, conceding the first two goals of the game in the opening five minutes, but from then on it was one-way traffic.
Teenage marvel Ella Roberts amassed 19 possessions as West Coast's dominant midfield iced the Magpies out of their attacking 50.
On the odd occasion they did bear down on goal, the Eagles' defending was steadfast.
Belinda Smith's outstanding diving smother to deny Sabrina Frederick an open goal was a standout.
Up top, Jess Hosking scored a brace while Amy Franklin shook off a painful finger injury to score a goal of her own.
The Eagles move to third on the ladder after the first back-to-back wins in the club's history.
With just four rounds completed, they have already set a record for their most wins in a single season.
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