Aggressive children's python?

My children's python is about 1.5 years old and she is quite aggressive, only when she's inside the cage. She has struck from inside the glass multiple times when I put my finger against the glass from the outside, despite being fed only a couple of days prior. Its really sad because I got a children's... show more My children's python is about 1.5 years old and she is quite aggressive, only when she's inside the cage. She has struck from inside the glass multiple times when I put my finger against the glass from the outside, despite being fed only a couple of days prior. Its really sad because I got a children's python because I read that they were extremely docile and not aggressive, but she is quite the opposite inside the cage. She's never struck when im handling her which is okay I guess..... is there something that I am doing wrong? why is she so aggressive?
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