Someone Help, I have a new baby ball python only 3 weeks old. After one day attempt doesnt want to eat. I allowed her to acclimate for three days, should I have done more?

My setup is a 12qt tub heated with 4" flex watt on one side. The room temp is always 84, and she has two hides, one on the cool end and one on the hott, shes always on the cool end.

The food item was a pinky rat I offered her and she seemed scared of it. The previous breeder before me told me her first meal was a fuzzie. Do you think I should go and buy her a fuzzie and try it out? Maybe she doesnt recognize the prey item?