I think you may be reflercting your own fears, challenges, and negativity onto another person..... A positive can do attitidue can overcome a lack of natural talent.....and for all we know Donna is full of untapped natural talent. Donna has manged to so far raise Quest, teach him to lead, trailer, blanket, get him gelded, and fed without growth issues.... I think as long as she wants to make forward progess and puts efforts into that goal than she will. She is ot trying to do thi on her own she is getting the help of a trainer. My trainers barn is full of horses owned by adult women that did not have a chance to ride as young people, many of them are now empty nesters that can finally aford and have time to ride. They generaly have their young dream horse in training that they come out and take a lesson on once or twice a week and go to shows and they really enjoy it...and the horses are doing just fine.