Her cage needs to be baby-proofed, and she needs to be getting an extra source of calcium. Once the babies are born, you can handle them as soon as she's done cleaning them up, they're born fully furred with their eyes open and ready to run around. You should be able to accurately sex them by about 2 weeks of age, any male babies need to be separated at 21 days. Females can stay with their mother indefinitely, they should wean themselves off of her milk at 4-5 weeks. The mother needs to keep getting the extra calcium starting from her pregnancy up to when the babies stop nursing, the babies should continue to get extra calcium until they're 6 months old. Good luck!