I don't know now why I let her believe otherwise, but someday, perhaps, it will be clear.
I am uncertain why I allowed her to believe something different, but I hope that in the future, the reasons will become apparent. The uncertainty suggests a sense of regret or questioning about past actions or decisions, leaving the true motives unclear to the narrator.
I trust that with time, clarity will emerge, providing understanding of why things were done the way they were. The quote reflects a hope for enlightenment...