I have not, but you are right to sense that something seems fishy. The videos are made to be convincing, that's how scams work. Many of the members of the facebook groups are respected SLPs with a focus in stuttering and they can see right through her scam as clearly as anyone else. She has no affiliation with the American Speech-Language-Hearing Association as far as I know and makes her claims without evidence. Bottom line is she is preying upon many stutterers desperation in a bid to bilk them through false hope.