Thanks all, I am looking forward to meeting him and we will be very careful before commiting to bringing him home. If he looks and acts like he is physically sore, mentally tired and/or grumpy about her riding him, we will pass on him. If he looks willing, we will respect his limitations given his age and gladly accept the lessons he can teach Wren.
I do not think his age is a problem, he is old - but seems welll cared for, and if he is happy and sound (even if he needs maintenance) there is probably no safer way for little ones to learn the ropes than on a wise old pony... my first my parents bought at 18 and we owned him until his death at 37. My oldest learned on a 37 year old. My show gelding had to be retired at 11 due to arthritis and ringbone, and my 4 year old mare has a huge sarcoid that may limit her ability for me to use her, so age alone isn't a real factor for me, as someone else here posted, lots can happen to a horse at any age, regardless of the level of care they have had.
I am bringing my 22 year old, 5 foot 2, 95 pound daughter with me and she will ride him and put him through his paces so we know what he can and is willing to do. I will let you all know how everything works out...
There is no passion to be found playing small - in settling for a life that is less than the one you are capable of living. - Nelson Mandela