Stop this doping nonsense. She was tested a lot for sure since world U18 champion in 2011, then U20 champion in 2012, junior XC champion 2011 + 2013, and then CG champion 2014, silver at 2015 Worlds, 2016 Rio champion, and then more titles.
She didn't have even one whereabout failure (Gabby Thomas had 2).
BTW. this WR that is really something. It was considered near-unbreakable when Dibaba set new one in 2015:
"Qu Yunxia's mark of 3:50.46 [all Chinese marks were doped], set at the 1993 National Games, was considered to be one of the toughest world records on the books. But in a perfectly judged race, world indoor 800m champion Chanelle Price paced Dibaba through 400m in 1:00.31 and 800m in 2:04.52 before leaving the Ethiopian to finish.
Dibaba still had European champion Sifan Hassan for company as she passed the bell in 2:50.3, but the two-time world indoor champion kicked hard. With 100m left to run, it became clear that Dibaba was, at the very least, going to get close to the world record. But she charged for the line, crossing it in 3:50.07 to become the fastest 1500m runner in history."
So Hurta-Klecker can pace easily, the question is if she have good sense of speed.