Both the Bay Village Police and FBI are now aware of this new witness that definitively ties suspect Dean Runkle to Amy Mihaljevic and the girls from North Olmsted who were also stalked in 1989.
The next step is for them to seek out the people who can verify Dora's story. If her niece also remembers the man from the Nature Center, then you've got a pretty solid bit of testimony. They should also be following up with the people Dora spoke to about this incident in 1989 (long before my book or media attention could have influenced her story). As well as the Lorain Morning Journal, which may still have the letter Dora sent a couple years ago, naming Runkle as the man she saw that day.
But whether anything comes of this new info is entirely up to police and prosecutors.