I think you can acknowledge that these girls have been through a ridiculous amount of emotional upheaval in the past few weeks and still think Sasha's behavior was unsportsmanlike. The two don't have to be mutually exclusive. That bubble they were in did not help anyone in this situation. To be isolated from loved ones and be under constant pressure is not easy. I empathize with everything they were all going through, but I still think Sasha was lacking in sportsmanship.
Imagine seeing your training mate go through the most horrific few weeks of her life, fall off the podium and have an emotional breakdown at the Olympics with the world watching, and instead of going up to her to offer comfort, you stand directly behind her and have a breakdown of your own because you didn't win. Sasha smelled blood in the water and became upset when someone else beat her to the bait. It came across as being incredibly insensitive.
To Sasha's credit, after her initial outburst behind Kamila, she tried to hide and have a moment to herself. Unfortunately Olympic protocols trumped having a moment to yourself and mourning a dream lost. I think someone from her team should have asked for a few minutes and let her have the emotional release she clearly needed in privacy. JMO