If the brand is "Arctic Mice" or "Arctic Rat" the weight is for the entire box, not each, just to warn ya. But yes, as has been said, 10-15% of her body weight every 5 days is perfect for now. Then after 1,000g or so you can move to a 7 day schedule. And your probes should be placed under the substrate above the UTH. Don't use tape to hold it down as it can peel up and get stuck to your snake (don't wanna risk injuring them). Hot glue works pretty good.