One thing I find very odd is Julia's friend recanting statements she made to LE about inappropriate behavior on JT's part towards Julia in the family household. IMO the statements she made were probably true, in that Julia confided this to her.
(the statements themselves sounded eerily familiar to me, of a friend I had in high school who said to same thing of her stepfather, she never wanted to stay home sick from school because the stepfather, who worked a midnight shift was at home while her mom worked. He would ask her to sleep in his bed, and cuddle with him, he would tell her not to be afraid etc..)
IMO...The statements Julia's friend made that were reported to her by Julia sound classic of a someone who is trying to coerce a child/teen. Was she afraid people wouldn't believe her? Did she fear having to testify in court? Since Julia confided this to her friend 2 years before her death, I'm assuming this is a friend from Monroe where other family resides since Julia went to MCCC in Monroe before transferring to EMU in Ypsi. Maybe the friend is in the same social circles as other family members and has been convinced that JT would never do something like what happened to Julia and YPD was unfairly targeting him. And that those statements were said in anger by Julia, who wasn't getting along with the stepfather at the time. Or, those statements get in the way of LE finding the real killer.
IMO...Another thought about the statements being recanted is that the friend, being the only person she may know of that Julia confided in, may be feeling solely responsible if JT is charged with the said event. Maybe her own family told her after making the statements to recant, and not to get involved.