Proofreading, editing, and even writing could all easily be tutored online. I accomplished this with my daughter all through her university years at Colgate University in upstate NY. I am here in Dallas, TX. With Microsoft Track Changes, the proofreading and editing are easily kept separate so the client can decide which changes they would like to accept or not. This would save the client a lot of time in travel and simply the time spent together with the tutor when then the tutor can simply read the work through and send it on without any interruptions. The client can always contact the tutor if there is any editing critique they would like to question or discuss.