I did look at the minutes played. Against a few teams, (mostly not too good) she has gotten 15-20 min per game, but for the most part, her minutes have been minimum. Reason that I asked if it was a conditioning issue.
I don't think conditioning has much to do with it. She's tall, but not very big. And the posts we've played recently are big (osu twice, Hypocrite U). Vivi is really a better, and more successful, matchup against these type of players. She has lots to learn but a tremendous upside.