They do did not show it because it creates doubt and drama as to what really happen.
Well, yeah. If they showed it was really Deb, there would be no "big reveal" though I think nearly anyone who watches a lot of current television could see it coming to be honest. I would be absolutely shocked if it was Hannah and not Deb herself.
Derrick Rose - Jimmy Butler - Luol Deng - Carlos Boozer - Joakim Noah
Marquis Teague - Kirk Hinrich - Mike Dunleavy Jr. - Taj Gibson - Nazr Mohammed
Tony Snell - Erik Murphy