Quoting Blair Waldorf (SuperKink):" I don't know if it's a sensory thing or not. My 6 year old chews the hell out of his shirts. Like to ... [snip!] ... amazon. She may or may not grow out of chewing but at least she won't be chewing up stuff that isn't meant to be chewed on."
Quoting mommommommyma:" My oldest is 6 and has autism and he puts absolutley everything in his mouth. When I say everything, I mean everything. Look into getting her a chewey tube. ( it least I think thats what its called )"