Hostile day after feeding?

[IR_Slacker]

So when I first brought my new BP home on the 22nd, she was in her tank exploring the new surroundings in her tank. Very peaceful looking. Just yesterday I fed her a medium rat and she ate it right up. Today 24 hours after feeding, I went inside her tank, prepared to start getting her used to me and handling her. I was going to remove the rat feces and she was following my hand with her head very intensely. Making very quick movements and I was being slow and steady. She was always facing my hands. I took my hands out and blocked the feces off with her log and picked it out real quick to get the job done. But the entire time I felt like she was ready to strike at any time.

According to the previous owners, she has never been the hostile type, always was great being held by the family and the kids. Do you think I should just give it more time?

On another note, they never fed her in the tank until the last 2-3 feedings as they didn't have time for her anymore, hence why they got rid of her. So now she associates the lid opening with feeding.

I want to start handling her, but I do not want to be bitten on my first attempt. This is my first snake, and she's a big one. 6 year old BP.

Any recommendations on how I can get her used to me and start handling her?