Talk:A Towerful of Mice/@comment-26145872-20170611210300

In an odd way, letting the plague maiden go free could almost be considered a good thing, since (SPOILERS) if you send Keira to Kaer Morhen in the following quest (and let her keep Alexander's notes) she ends up discovering the cure for the Catriona Plague. She would gain widespread fame for putting an end to a horrible disease that ravages the North in the long run.

I can confirm this as the village of Midcopse refused to give away her location to anyone because of the fact that she aided the village with whatever assistance they needed, including keeping their livestock healthy, a rare luxury in Velen. She also mentions helping to treat or cute ailments that inflict the villagers themselves, particularly hemorrhoid cream.

If simple peasants, who are normally distrustful of mages, would try so hard to conceal her for those simple acts of help, imagine the respect she (and other mages) would gain for curing the Witcher world's equivalent to the Black Death. Of course she could still discover the cure without the plague maiden being set free, but being there to offer treatment when people need it most would be opportune. It would make for great timing and make her disocvery all the more impressive that she could stop a potential pandemic across the entire North, and possibly even Nilfgaard.