there are two fuses and then the trunk relay in the underhood relay box. So, both fuses are good? Should have power all the time. When you push the button does the relay click? The trunk has two latches (one on each side) both don't unlatch or does just one not unlatch? Or does it sound like both unlatch but the trunk is stuck down?
if the electrical won't work, you can demount the left rear wheel and go in through the fender to pop the emergency trunk release. you have to remove the left rear tire and then remove the inner fender. Then you can access the child safety release latch for the trunk through an opening into the trunk.