Responses
yes I agree with your theory
though now that I think about it, it was not a transactional curse (as in this for that). turns out she cursed herself too for loving him despite his cruel treatment of others
That's right. That's how Seth said it when he figured it out.
According to my understanding, it was osiris who isis cursed of not having his way and his wish shall never be granted, which is to be with seth, but in return isis can never be with osiris.