If the counselor believed it to be a substantiated incident of sexual abuse, the counselor would have to report it to state authorities who would have no jurisdiction to act on the complaint. I have no idea if they would try to relay the information back to the other nation, assuming they even know what that nation is.
Note: To the extent that you can still get a benefit from therapy without doing so, you don't have to state that it was your husband who told you this. You don't have to share your husband's name (although if you say "my husband" it probably wouldn't take much to figure it out). You don't have to identify the nation where this allegedly occurred.

