Her grammar, punctuation and content all seemed pretty good: if you ignored the spelling they read like emails from an intelligent person.
So are you saying someone who cannot spell - as a result of dyslexia or for any other reason - is not intelligent???
More generally it is interesting to see how the advert unearths such polarised (polarized, if you prefer) views. For myself, when I read the advert I noticed the spelling errors and so on (although, of course, I don't know if I noticed all of the 'errors') but it didn't bother me greatly, I was more interested in the aircraft. I made some initial assumptions that the current owner(s) must be/include a maintenance engineer which from my experience means that the aircraft, however tatty it may be cosmetically, will have been lavished with TLC from a mechanical perspective. I don't know much about aircraft values but I suspect the successful bidder has got a good deal!
But back to grammar and stuff. The simple fact that many of the posts are dismissive or critical of the author of the advert should serve as a warning to anyone who seeks to communicate in writing, particularly on the web. The actual words used - irrespective of the accuracy of their spelling - is a very small part of the message that is actually conveyed.
And I do hope that any errors in spelling or grammar that I may not have spotted do not detract from the points that I am trying to make.