Thanks for asking a question on thisisyourbible.com
Matthew 27:19 While he was sitting on the judgment seat, his wife sent to him, saying, "Have nothing to do with that just Man, for I have suffered many things today in a dream because of Him."
That's all the information we have about Pilate's wife's dream. We can speculate but there is no way to verify if the speculation is true or not.
I hope you have found this helpful.