).. This isn't a good thing as it would cause someone to be prone to choking.. Sometimes doctors perform a procedure where he actually dilate the esophagus. I would suggest that you get a follow-up appt with a Gastroenterologist for ur mom. Hope this helps.
I'm sorry to hear that your Mom is having such a hard time. It's wonderful that you are trying so hard to help her. There are so many things that could be causing this including a condition called achalasia: http://achalasia.us/AllaboutAchalasia.html. I agree with Tessabella82, that she really needs to talk to a Gastroenterologist. The GI should have some ideas to help you sort this out.