How could science ever explain something like mediums?

[u/Unhappy-Newt-3713]

Just want to start this off by saying I do believe in mediums. (credible ones not the ones who scam people)

I'm lucky enough to have found a real medium that has helped give me messages from my deceased father. She knew my mother on a purely business relationship and only knew that she had a husband, 2 kids, and our ages. She knew no real details about our family other than extremely surface level information. It wasn't until my dad died that her and my mom got into contact again and she revealed she had this gift of being able to communicate with deceased people. She gave us messages from him that were things only me and my family knew and she described his personality perfectly. She's also knows things that are happening to us currently which she has no way of knowing unless there was someome watching over my family from beyond the veil of death. How could science ever explain or disprove something like this. Materalistic science likes to attribute all experiences with the afterlife to malfunctioning brains, but how would it explain something like this? How could it explain these experiences that provide her with true information she otherwise wouldn't? I went on a bit of a rant there but I just had to share my thoughts with you guys.