I want to use this thread to say that there is a chance that she won’t be fully blind . In the very first chapter after Douma’s defeat she said she could barely see with her right eye which is the one she used against Douma and now she used her left eye . So actually she should be able to BARELY see with both eyes even if I think that it’s more probable that she ends up blind or even dead .
As strength she is the strongest between the “5” of the selection for kinda long time , but in the moment that Tanjirou learns how to use multiple times the breath of the sun he becomes stronger , I am referring to the sword smith arc . Then she fights against Douma but she only wins thanks to Inosuke rescue and Shinobu sacrifice ,yes she puts up a good fight but in the end , alone 1v1 she would surely lose . And in the end with Zenitsu soloing Upper Moon 6 I would say that he slightly surpasses her , Flaming Thundegod is kinda op and against Muzan Zenitsu did WAYYYYY better .
Talking about her and Tanjiro right now I have huge doubts that they will end up together , and more than that Tanjiro has never really shown to like/love her so most likely she won’t end up with him . I am not the kinda of ship guy , I don’t really care and I don’t ever liked shipping very much ( except for Iguro and Mitsuri , my only ship ) so I can be easily wrong and I may have not seen hints from the Mangaka but that’s it.