This year, she is ranked first in Britain by more than four seconds at 3,000m with a time of eight minutes 56.20 seconds.
Eilish McColgan is the only Briton selected for the women's 3,000m in Poland next month. The Scot, who was also absent from the trials, ended 2013 with a best of 8:47.79, but has not raced since 22 September.
"I had an email on Monday asking if I could ring one of the selectors and I was excited thinking it was just about the details," Avery continued.
"But it was to say I could not go because of failing to get permission to not run the trial. But it was them who asked me if I wanted to be considered, not the other way around.
"Then to not be picked and see that there's a space, and also that the person who has been picked didn't run the trial is really tough to take."
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