Dean Knuth, creator of the U.S. Golf Association's Slope Rating System and a Golf Digest contributor, said Gagne's achievement was "impossible". Analyst David Boyum said the odds of Gagne's feat are "1 in 2,253,649,101,066,840,000,000,000,000,000,000,000." 
As 2007 progressed, the number of holes in one she claimed to have hit continued to grow. USA Today reported her number of aces that year to be up to ten, including one that was banked off a tree. The same article reported that her feat earned her a guest appearance on the Late Show with David Letterman. Then in June 2007, the Wall Street Journal reported the number of holes in one was up to fourteen. She also made an appearance on The Today Show.
In October 2007, published reports began openly disputing the evidence behind her claims. In November 2007, when her claim had reached seventeen holes in one, a Golf Digest journalist investigated her claims and cast doubt on her accomplishments.
Gagne briefly had an official website located at www.jacquelinegagne.com, but the website has since been disabled.