Baby ball suddenly aggressive :( Help.

I've got a 7-8 month old normal BP. She has been super chill since I bought her. Her temps and humidity have been great. She shed a couple weeks ago and it was a full shed. She has also eaten every time I've fed her. (Once every week) I fed her on Wednesday and left her alone. I just went in there to get her out of her cage so I could hold her before leaving for spring break...before I even opened the cage, she was acting weird. She was watching me closely and following every movement I made. I took the lid off and got her hide out so I could pick her up....usually she's curled up in a ball, but this time she was in striking position and was following my hand movements, so I just let her be, as she seemed really pissed off for some reason. :( Has anybody dealt with this before? She's usually so calm, so I'm not sure why she's acting this way all of a sudden. :( I also feed her in a separate container, I've never fed her in her cage... Help :(

Can you define great temps and your feeding? Temps? How you measure them (thermometer used), prey size etc

Also how big is your BP and how big is your enclosure? Do you provide hide?

The more the details the better.

Keep in mind that younger individual are naturally defensive however husbandry issues can cause this behavior as well.