No. cloggy, it isn't. Or did your language development stop at age 8? From a language development point of view, she is post-lingual, which means that she had acquired the foundations of spoken language prior to onset. Language contiunes to develop over the lifespan....or at least one hopes that it would. For some, that appears not to be the case. However, late deafened refers to adventitiously deafened.
