Where is the exact location of her ashes?
The exact location of Terri's ashes is "not buried."
Her remains can stay in that exact location forever, and "not buried" plus "no plan to inter them" plus "no plan for a memorial service" is in full conformity with Greer's order.
If Greer wanted Terri's remains to be buried, he could have ordered that. I don't believe Greer ordered or would order burial. I believe he ordered Schiavo to disclose burial and memorial service plans. If Schiavo has no burial or memorial service plans, he has nothing to disclose.