hot and cool side don't really matter because she has a favorite hide, and never really changes sides (only seen her hiding on the other side maybe twice). but on that side i keep it around 80 during the day, then at night i put the heating pad on. stays around 71 in the house.
Well yes it does matter because you should offer a temp gradient to your BP so your BP has the choice and can thermo-regulate his body.

You should not have a night drop in temperatures and your temps should be 80-84 on the cool side and 90-94 on the warm side, ideally measured with a digital thermometer/ hydrometer as stick and dial are not accurate