After some further thought, I have to make the observation that I think T'pring knew something was wrong with Spock. There are a few things that T'pring does that indicates she knows that whatever Spock is going through, it's more than he lets on. The main indication, to me, is when she held his hand after pouring the tea, which has to be excruciating to Spock. She helps him while he's pouring the water to ensure the tea is properly steeped. She initiates the end of the Ritual of Awakening; interrupting her mother because the timer has expired. She defends the memory Amanda and Spock share. I love T'pring because, regardless of the circumstance, she stands beside Spock and defends him in the best way possible.
Unfortunately, by the time she realizes something is amiss, they are committed to the ritual and they cannot get out of it even if she would want to delay it. I still think that Spock, at the time, chose to not disclose his condition for good reasons. I'm still on the fence that T'pring would've accidentally revealed that during the mind meld with her mother. I'm still onboard that Spock made the correct decision, however I can say that he should of at least disclosed that something was amiss a little later on.