Mafia 88. Corruption

Sky, but in the first post, in the description of the rat, it says:

- infects the selected player, leaves no traces, the player dies the next night (once every two nights)

How should this be understood then?

Added 3 minutes later
Morning, if I were in the Mafia's place, I would actually use a check that also carries the risk of losing protection, instead of killing with a heal-piercing ability?...

Added 4 minutes later
And I didn't understand your reasoning about probabilities. Hainess fits 8 peaceful roles and 4 Mafia roles, so the probability of randomly hitting a Mafia member when she is executed is 4 / (4 + 8) = 1/3. And for the others, it is 5/16, which is slightly less. That is, if you have to execute someone randomly, then it should be her. And yes, she could easily be a blocked killer.