There is some special pleading because she is a minor, possibly abused* and she tested clean when she arrived in China.

* The committee didn't mention the abuse part, but looking at her photograph made me want to scoop her up and protect her. I don't generally follow figure skating, so I didn't know until last week that her coach Eteri Tutberidze has the reputation for churning out girl skaters who do amazing things and then end up with eating disorders and life-changing injuries. Possibly true of many coaches like the Károlyis of gymnastics infamy.