The naming of her and the pony right off the bat is the biggest thing I first see. It is nice to know her name, and the initial interaction with the field and the pony, If I am remembering right they (the field and pony) do play a small but important part later. In the edit with the naming, I think naming the "(old Lady) would have been a good thing also, but I do not recall if she plays a roll later or not, but it would show that familiarity between Ashleigh and the "Old Lady".

One old lady, Ashleigh’s most regular client said the same thing every time.

to: One old lady,(Miss Crumbottom), Ashleigh’s most regular client said the same thing every time.

But not sure it would make any difference. I sort of like both versions, but the second gives us a little bit more detail to hold while we read and enjoy, wondering when Nibbler's part will be revealed.