Imagine Natasha left little you in the hands of a shield agent while she went on a private mission for Fruy. While she was gone a hydra agent broke in to the apartment you were in and killed the shield agent watching you. You thought fast and grabbed one of Natasha's gun and pointed it at the agent,after a few threats and a shot to the leg,you had the agent hand cuffed and sitting on the couch. You sat there with the gun pointed in there direction for three days,until Natasha came the apartment to get you. She called someone to come the agent and took you home,where she fed you and put you to sleep.

When Natasha told Clint he couldn't wait to start training you!