Is the statement "I have nothing to say to you" considered a divorce by innuendo, given that there was no intention of divorce, and what are its implications? Is expiation necessary if it is not a divorce?

It appears that the divorce did not take place, because you resolved in your heart to effect it but did not pronounce it. Your statement, "I have nothing to say to you," does not constitute a divorce, especially since you did not intend it as such. No consequences follow from what you mentioned, and no expiation is binding upon you.