Its not a good idea to break or cut the stinger of.
They do use it for self defense only when scare the poop out of factor doesnt work. and they also use it when trying to subdue something larger than themselves. ie: very large crickets, locust etc.
Try putting a few crickets in with her while she is giving birth, maybe she thinks she needs to feed the offspring now and nothing is available.
also courtisy of Nat Geo and Animal Planet web site, what looks like them eating the off spring is only them cleaning the babies up.
not necessarily the facts here.
OEGBMan you can come live up here I will let you have all the Arachnids you can stand. I love the little bugs.
ps: not fat tail/yellow scorpions though.