Replying to comments from email notifications - if Annabel is logged in as dw_annabel but has an email notification to fic_annabel and she replies to it, should it go through, or should she see the "cookie expired" message and need to log in as fic_annabel before the comment posts?

(I'll be honest, I'm firmly of the opinion of "the comment should post as fic_annabel while logged in as dw_annabel" - this is because I know a lot of people who will not use Dreamwidth for RP because they have multiple characters and want to be able to reply to comments from email notifications without having to switch logins. Being able to associate journals and let that authorise comments without switching their login would make DW a lot more RP-friendly.)