My female is more jumpy but once I have her out, she is fine. Just takes a very quick hand to get her out without being pinched.
Mine had 16 babies (one died) but they normally have around 10. Give or take.
I use Eco Earth. It's about 5 inches deep so they make their own burrows. Once I took mom out, filled in her enormous burrow, and put the babies back in the larger tank, they went to work and had multiple burrows excavated within days.
My original pair were imports. As most adults at pet stores or expos are. So I don't know how old they were when I got them. The female did grow quite a bit in the year before she had the babies.
Offer yours a super worm (with tweezers or feeding tongs) once a month for a filling snack. They are too fatty to be a staple diet tho. Even better would be a silk worm. They are very high in vitamins and nutrients including calcium for their exoskeleton.
Females can get rather large if they are in the proper tropical environment and get a variety of foods. Crickets as a staple but the occasional worm feeder is great to ensure they are not lacking in any necessary nutrients.
My male died a couple months before the female gave birth. She must have known it was time because she starting getting aggressive with him. She attacked him once and had him backed into a corner. I put him in his own enclosure and he was fine for at least a couple months but then just died. I'm not sure if it was age or what. They live 5-8 years in captivity so I was glad that she had babies. Now I have some that I know their age and I know they do not have any parasites or illness associated with the wild caught ones. My big female is doing great though. I'll definitely be breeding a couple of the little ones next year. It was fun and interesting to see the entire process from birth to now.
Momma emperors are one of the only scorps that defend and take care of their young. They kill crickets and leave them fir the babies. Once the babies begin eating, then she will eat. I'd put a bunch of small crickets in and let mom go to work. Once she was done, I'd give her a super worm to fill up on while the babies ate. A couple times I cut up super worms into small pieces and dropped them at the burrow opening and the babies would come running out.
They are facinating.