I 100% agree with Deb. Patience is needed wait for 3-5 meals (typically with babies 5 days apart so wait at least 15-25 days assuming she eats what you offer)

I personally recommend herpstats thermostats by spyder robotics. Helix controls takes the second place, Ecozone and herpkeeper behind that. It is hard to beat the herpstat.

Stats are needed but so is heat if the hot spot is below mid 90s don't turn off the heater if it is over this try adding a spacer to allow the temp to lower. turning off the heat depending on the room temp can lead to the death of the snake. Many modern heat pads don't offer tha same level of risk as the old school ones did.

(the old pads would get to over 130ºF sometimes into the 160ºF most modern pads are low density elements that do not get over 100ºF and some even have degradation switches that will never allow much higher than this.)