Well, I tried feeding them again tonight with no luck.

I took the rat pups out of the freezer in the morning and left them to defrost in a ziplock bag between both snakes' bins. When I got home from work I filled a cup with warm tap water and placed the ziplock bag in the cup of warm water so the rat pups could warm up. I made sure the room was pretty dimly lit and did not move the snakes from their bins this time. I first tried to dangle the rat pup by the tail in the female's bin to see if she would react. She was in her hide and did not come out. I then slowly lifted up the hide and removed it from the bin so she could see the rat pup. She looked at it for a bit and edged toward it but didn't attempt to strike at it or show much interest beyond that. Instead, she moved to the back of her bin and slipped under the paper towel. I left the rat pup in the bin with her (in case she felt uncomfortable with me being in her line of sight) and closed the lid.

I decided to try the male and see if he would be more receptive. He showed even less interest than the female. I had to remove his hide because he didn't come out on his own. He sat coiled in a ball but did lift his head to look at the rat for a moment. However, he showed no interest in it beyond that so I left the rat pup in the bin with him and closed the lid.

So far, neither of them has taken the food. Am I still doing something wrong? When should I try to feed them again?

I was also thinking that they might not be used to my scent because I have only had them for about a week. Should I try handling them for a few minutes every day before trying to feed them again so they can get used to me or will that just stress them out even more?