I feel I have to give a warning on here because I know how people can be deceived, so I will just quote this (which gives a warning of how these 'messages from beyond the grave' can be used to deceive and harm.
Several years ago, my wife and I met with one of my former co-workers after she (the co-worker) told me her deceased father had been appearing to her. She was awake during these apparitions and was having conversations with the spirit. She said that her father had died about a year earlier. When he started appearing to her about a year later, she said she was certain it really was him because he told her things that only the two of them knew about. We asked her if she was familiar with what the Bible had to say about talking with the dead? Predictably, she said she was not.
We explained to her that in spite of how much comfort this spirit was bringing her, that unfortunately it was not really her father. God tells us very clearly that the dead are not able to communicate with us. We also cannot communicate with them. However, God does warn us to avoid these kinds of contacts because Satan and other demons can use them to deceive us.
We explained to her that the reason this spirit knew about this secret information is because her father and her were really not alone when they shared this information with each other while he was still alive. Their actions and words had been witnessed by one or more demons who were then able to repeat these details to her later during these apparitions.
The secret [things belong] unto the LORD our God: but those [things which are] revealed [belong] unto us and to our children for ever, that [we] may do all the words of this law.
Deuteronomy 29:29
"Secret knowledge" that God has not revealed to us about the universe, the future, etc. is sometimes given to people by demons. It sometimes contains some accurate information, but also is often wrong and intentionally misleading. Modern examples of misleading information revealed by demons include the Urantia book, the Marian apparitions, and TV shows about communicating with the dead like Beyond, and Crossing Over.
And Summer I definitely do believe you but would just, in love, warn you to be so careful.