I'd be surprised if it had any bearing on things. The police won't have acted on anything she said. Besides how accurate was her information. Was it unspecific but in someway matches the area they were found.
As pp says if you have several dozens of mediums making predictions by the law of averages one of them will have said something that can be tied in. Probably the same statistics if a couple of dozen MNers had
I'd be interested to see what exactly she said & the accuracy. Shes certainly taking all the credit on FB