Sira's bleak history

My friend suggested using a series of pictures to show Sira's past, so here i go....
 
This is when Sira had just left the Village of the Sand for Konoha. She ran into Chimimaru and after this huge fight he makes a deal with her. The deal is that if she joins him, he will spare her life. Sira says that she would give her life to even scum as low as him if it meant her friends stayed safe. So then he threatens to kill Suna, Gaara and their sons Byiokan and Sabaku, so she agrees to join him. This is about after the 3rd mission she is sent on, when she is to assassinate a Konoha messenger. After she does it, she thinks of running off, (in the pic) but then remembers the deal that they made, so she stays. Before sending her on her last mission, he adds to their agreement: that if she wants to leave, he is allowed to leave the curse mark on her, and again she agrees.
          His last mission for her was to infiltrate Konoha by joining Amayas group, and then to meet him with the squad at the sand village. When she takes the Chunin exam, she meets Chii Aburame, the only one who notices that she is the girl on the posters. She ends up beating him, but they remain rivals.
            The reason Sira left was that during the attack at the sand village, he poisons Sabaku, almost killing him.