Psychic Gene Inherited Or Just An Over Active Imagination?

My grandfather was born in 1924. He had written papers about things in the future as far as government and the economic struggle. A lot of people called him crazy. Yet look at where we stand now. Since I was little, I've had dreams that have come true. Nothing major just places I go to in my dreams I end up going to in real life. As I got older these dreams became more frequent and in more detail like things actually happening. Also, I'm able to talk something up. Now my 4 year old daughter is showing signs of being being a medium. I heard her "talking" to her unborn cousin. She told me Emerson will be here soon. She just wants to nap for a few more days. Wouldn't you know 3 days layer her cousin was born. She lost a great grandfather... She tells me yellow butterflies are papa John. Every once in awhile you'll find one flying near here. She told me she hears them at night when she sleeps. But they don't go into her room. And they aren't her friends. She doesn't know them. That is the one that scares me. I wish to explore into this more but have a few fears. That, and I don't want my aunt to think I'm crazy. However, if I have enough of the right evidence she will believe me. I know that my grandfather had a gift as I also believe I have one. I feel mine and my grandfather's were more of an esp though, not so much a medium. Which is rather frightening and amazing at the same time. How can I tell if she really is a medium or just has an overactive imagination? And if she is a medium how can I protect her from the bad things without forcing her to forget about her ability?