Why is it unfair? She sacrifices her own life to tend to Archer. That's quite noble when you think of it.
I think all three (Archer, T'Pol, Trip, well maybe also Phlox) behave kind of creepy, but the worst figure is T'Pol. She is scientist, has experience with leading and diplomacy, operated as agent, traveled and served at space before Enterprise, all the skills that the humanity desperately needs at the final war, right? Well, she lost the last battle for Earth as a captain, then as a female she is good enough to play nanny twelve years for amnesiac Archer. OK, let me accept the gratitude thing. Then tells she to an amnesiac Archer that
"Their relationship has
evolved over the years." What? How can be things evolve if one side of relation forget them after hours? We are not sure what exactly but we can assume there is something going on. Probably, physical or only sentimental. In both cases we can call it abuse/misuse, since Archer is not mental healthy. Well, for a second we can change the gender. If, Archer did the same for an amnesiac T'Pol what would be our reaction? Huge discussion at the scale of sexual assault to rape and all the hate, right? Now, why we don't call T'Pol rapist/abuser? Even some people find it romantic, heroic, whatsoever what she "did" with Archer. It is embarrassing, imho.
I really , really love the AU stories also most of my favorite fanfiction are AU stories. So, for me Twilight had potential to be a great AU and dystopian saga, but I have my problems especially what they have done with T'Pol figure there.