I wrote to the owners asking for an update and this was the reply:
She is doing just fine. We're so pleased. She doesn't have to have the Zantac anymore, and she is eating well. We now mix the crushed pill with her food, rather than use the syringe.She seems to be putting on weight (think that's the kitten food!), and is much happier.
(this pic was taken a few months ago!)