Sorry you came 200 years late
last native Coptic speaker was gone by that time
sorry, we have been looking for any survivals, but no luck so far
I think you will be interested in reading this topic
http://kame.danacbe.com/index.php/topic,232.0/topicseen.htmlif your luck was better than ours, please share your experience with us (or tell us your article will be in which news paper

)
but beware of those who claim they are native speakers and they are not