14 Weeks Since Dx, Constipation Issue?

[0AmyMarie0]

My 7 year old daughter is 14 weeks gluten free.  Today she ended up in the hospital because she wasn't eating or drinking.  She was very dehydrated.  It turned out her intestines were so backed up that she had no room to put anything else in.  She also had a mild virus that caused a fever a couple of days ago that made things much worse.  That was so unusual considering she's had diarrhea since she was a baby!  One of the dr's that saw her suggested that her muscles are unsure how to handle solid poop since they've never had to. 

 

Has anyone else ever had this issue?  They want to put her on mirelax the next 2 weeks and possibly long term to help soften her stool and pass it.  She typically eats a bulk of fruits and vegetables, a few gluten free grains, sunbutter, and meat once or twice a day, so it doesn't make sense that she would get constipated by diet alone. 

 

Also, they said she had pre-ulcers in her esophagus.  Has anyone else had that as part of celiac damage that takes time to heal?

 

Thank you for any help!