"ON RAPPEL!" (You'd better hear from down on the ground, "ON BELAY!", otherwise you don't have someone who'll brake your descent!)
I haven't done it in over 25 years, when I was but a young Civil Air Patrol cadet - my first rappel was a 90-foot cliff down Yonah Mountain in northeast Georgia, followed by a 250-foot rappel down Whiteside Mountain in North Carolina - 50 feet of cliff face, 200 of overhang, with nothing but a rope and a trusty belayer on the ground! Eventually, I would have graduated to the Mother of All Rappels - the 750' rappel on Whiteside, but the family moved to South Florida before that could happen.
Once you've conquered the initial fear of going down the cliff (or roof) the first time, you'll be strangely compelled to do it again and again!
Not crazy enough to do it 'Australian style' - where the harness is worn to the rear and you face the ground as you rappel!
Good luck, Kelly!
And "ON RAPPEL!"