Poll of the Week: Temporal Prime Headache

Your ship has discovered a deserted starbase. It’s old, it appears to have been abandoned for centuries, and yet the technology is very advanced, so you set out to explore it. Before you send your away teams there, however, a shuttle appears out of nowhere. It is of Starfleet design, but it’s not one you can recognize. It hails you, and the sole crew member identifies herself as a traveller from the 27th century.
She tells you to avoid that starbase altogether. Apparently you will activate the station defenses, and afterwards leave a message for Starfleet to avoid that region of space in the future. A message that her fiancé, an archaeologist, will find, and it will draw him towards the station. This chain of events will end with his premature death, along with those of his team.
She assures you nothing else will change by your action, since the changes will be confined to the station. However you find that hard to believe, knowing enough about temporal mechanics and chaos theory to know that even a minor alternation can have huge repercussions in the long run.
You know that, even if you did, you would not be violating the Temporal Prime Directive since you will be changing your future, not your past. But she is openly violating it. Would you help her? Come and tell us!
This is a new edition of our category Morals of Trek, where you are in the shoes of a Starfleet Captain facing a dilemma any of our favourite characters could have faced in Star Trek. If your crew has faced any such dilemmas and you want to see it featured in a Poll of the Week, let us know!