They can be pregnant for up to a year yes. They usually give birth in the spring once it starts warming up. Of course they require very warm and humid jungle conditions in their enclosure, so I'm not sure how they know it's spring.

It's my understanding the eggs develop and hatch inside the female, who then "gives birth" to the live young. They will stay on her back for a little while. Once they are ready for their first molt, they will begin to move off her back. Then I'll put the mother in a different enclosure to be sure none of them get eaten. After the babies molt, they should be ready for their first meals.

I'll try to get better pics if I happen to catch her out of her burrow. I haven't been able to count them yet but it looks like there are at least 10.