Having just watched Amok Time, there are a few things about the episode which made me feel it was badly written.
A Starfleet captain who knows nothing about the culture of their fellow Federation co-founders is bad enough, but a Starfleet doctor who knows nothing about Vulcan physiology despite having a half-Vulcan crew member is just ridiculous.
And as for "Oh well they just don't talk about it"?
This thing that happens every 7 years to every member of their species that is so embarrassingly super-secret they never talk about it to non-Vulcans ever, yet they have this grand and pompous ritual ceremony where they invite their nearest and dearest to attend?
I'm surprised the ritual didn't include a corridor of smashy crushers to traverse...
So T'Pring didn't want Spock anymore as she'd grown attached to another guy, she was taking a big risk that the victor of Spock's battle didn't decide to drag her along and make her live on the Enterprise anyway.