If she's an adult female in good body condition I wouldn't worry at all about a month without eating. She could still be adjusting, could be on a bit of a fast. How much does she currently weigh? One of my itty-bitty 90 gram carpets didn't eat for 6 weeks after I got her but is now eating fine and had not lost any significant weight.

As others have said, just make sure your husbandry is on point and that you're offering no more than once a week.