I might kill that bad guy

I was giving my children a bath this afternoon when I was trying to put clothes on my daughter Beth I saw that she had a bug bite on her legs I said to her somebody bite you up and she said where I might kill that bad guy. I was laughing at her I asked where she heard those words. It was funny and it was the first time I heard it from her. She is talking a lot now and every time we talk she copies what she hears like a Xerox machine. She can remember what she hears easily. I told my daughter that it was okay and I would put some ointment on her legs to get rid of the bug bite and she said ok mama. After a few minutes she went to sleep, she was so tired.