Bezzoubenko placed 16th in both the ball and hoop events on Friday and 23rd and 30th in the ribbon and clubs competitions on Saturday for a total score of 66.050 points.
Carmen Whelan of Aurora, Ont., placed 29th all-around with 63.900 points.
Aleksandra Soldatova of Russia won gold with 73.750 points followed by Son Yeon Jae of South Korea (73.550) and Ganna Rizatdinova of the Ukraine, (73.250) in second and third respectively.
Bezzoubenko has been working hard since the world championships last September on four new routines to give her a good chance to clinch one of six remaining Olympic berths up for grabs at the final qualification meet for the Rio Games to be held in April.
“Patricia’s ball and hoop routines on the first day were basically good but unfortunately she made one mistake in both the clubs and ribbon on the second day,” said her longtime coach Svetlana Joukova of Toronto.
“She’s put a lot of work into the new routines, training six to 10 hours a day at the beginning, and now the number one goal is to be stable on all four routines.”
Bezzoubenko, who skipped the Elite Canada meet earlier this month in Vancouver to focus on her preparation for the upcoming Olympic qualifier, competes at another World Cup next month in Lisbon, Portugal.
“We will be working together to fix the mistakes,” said Joukova. “There are six spots available for the Olympics and Patricia wants to be one of those to qualify.”
“She likes her routines and is really enjoying them. Now she has to keep on working and to believe in herself.”
The final Olympic qualifier will take place in Rio de Janeiro April 22-24.