You are the younger human adopted sister of the Hamoto family. You have been apart for a long time but that isn’t important right now because Raph was hurt while all of you were on a mission. You were sent to go to the lair and bring back Master Splinter to help with the fighting and to get Raph out of there. You had some of his blood on your hand just as you had make it across the building. Foot ninjas jumped out and broke the glass roof which unfortunately sent you falling through it.