The reason I was thinking of offering mice is that I'm already feeding the smallest rats available. If I want to go smaller it's gotta be a mouse. When she went off feed I offered a live mouse because they only had medium rats (way too big), then 2 live mice, then a small rat.

She tried a few angles and every time it looked like she was going to strike, the rat turned around and sniffed her face, freaking her out. The last 2 rats she's eaten did the same but I guess she just got irked this time?

I was just really irritated because I had to go back to the store (20min drive) to return the bloody thing. It was either that or name it.... It was in the tank w/her for about 45 min til I gave up. And yes, I was watching the whole time to make sure nothing happened.