Well, they could always have written something to the effect of Pon Farr causes Vulcans to seek a mate of the opposite sex for reproduction purposes; however, a certain protein in that week's Rigellian stew rewired Polly's hormones, temporarily tricking her body into thinking that Hoshi had what she needed... I wouldn't have complained.
This brings to mind another side of the question, though:
Is it better to see T'Pol's body "fooled" into thinking she needs Hoshi in a get-me-off-or-I'll-die situation? Or something more meaningful and long-term? Sex alone? Or relationship?
One of the reasons I liked Mistress E's fic is because T'Pol and Hoshi come by their relationship organically, without violating anything canonically shown in "In a Mirror, Darkly." She doesn't just blatantly ignore that Tucker did T'Pol a "favor", or the fact that Hoshi had been sleeping with Forrest and Archer, yet T'Pol and Hoshi are bonded and in love.
One of my pet peeves about
pon farr in the fanfic arena is that it's too often used as plot device/justification for pairing T'Pol (or any other Vulcan, for that matter) up with whomever the author is 'shipping her with, both in het and slash. If you're going for a PWP and titillation is the only purpose of the story, okay, I get it, it's fine. But that's not quite what I'm talking about here. In stories where there's supposed to be a "plot" and a "point" beyond the titillation, I've seen authors use this to stick two people together who otherwise wouldn't be hooking up, who have shown no previous interest in each other in the show...rather than taking the time to craft a back story that suggests what could've been going on off-camera in the show, or showing us how the situation could have changed, and letting it manifest organically.
So what I'm wondering is, how do people feel about seeing T'Pol and Hoshi in an actual relationship vs. something that's just sexually motivated?