I was not clear. She was not on the base when the ball was caught or after. She left early by a couple steps base coach said tag and she went back to touch the base then left again before CF touched the ball. There is no question between all coaches on both teams she left early.Sounds like the plate umpire did everything right. Plate Umpire has all tag up responsibilities at 3rd base. Base Umpire will not be looking at that so not really any reason to go for help. Especially if you said she even went back to touch 3rd after the catch was made. Seems you and all the other coaches just have a misunderstanding of the rule. The player doesnt have to be standing on the base at the time the ball first gets touched. As was said earlier, the player just needs to have touched the base at some point after the ball has been touched.
Sorry hard to explain I know. I was not sure who had responsibility for the call. He was an ego umpire so I did not question him much. There were a couple calls I wanted clarification on that he would not address.