Hi I also have a puppy called Maggie who is a pure GSD !
good choice on name there i am thinking!
We introduced raw hide chews to her when she was about 14 weeks, not intentionally but that is a different story! They keep her quiet for a while and are good for their teeth. I never let her have a chew which is any smaller than about 10 inches long and 2-3inches wide as they can be dangerous, i leave her with them if they are new and VERY well wrapped together, (some have tight seams some dont) Once she gets a piece off i am a big spoil sport and take it off her to chuck away! She LOVES her RHC!!