i think so too, it doesn't have to be a complete reversal and could be left with the need to smoke a little bit from time to time instead of making her a complete addict at the end
well there could be a 3 way ending for that where we get to choose whether to keep her corrupted, reverse the effects but not completely or a complete reversal but for that to happen a lot of people would have to ask for it to be added in the game otherwise it wouldn't be implemented.