Bluelegs
Digging into the why
1. You cannot prove that they're running exactly simultaneously
2. It is still not 100% clear that that is the exact time in which Tarrant touches the ball
The vision is inconclusive. There is no evidence to suggest she was conclusively wrong, but none to suggest that she was conclusively right.
You can't hold the fact that the video review system is flawed against her though, she made an instant call on a line-ball decision, that's her job. The video reviewer could have called it back if it was conclusively wrong. Since there is no conclusive evidence to suggest that it was a clear goal it goes back to her and before the review system was implemented it would have gone to the lower score anyway, if none of the umpires knew how to call it.