To the OP, once in a while this stuff happens. Please feel free to start a new topic if that would make it easier. I am afraid this is just part of forums on the internet. I hope this didn’t chase you off.
@anasss Nobody in this thread has called anyone "ignorant," so please don't say that if it did not happen. Also, the use of all capitals is, in forums and other places on the Internet, generally considered yelling and impolite, and there is no need for that in this forum, or this thread.
I know you are trying to help others with what you've learned, which is great, but if you imply that meat is not safe for one reason or another such a claim can cause unnecessary fear in a forum like this, so I wanted to address that claim.
Sure, some people might get inflammation from chicken and are sensitive to it. All of us here know that many foods can trigger different reactions in people, but the primary focus of this forum is the reaction to gluten in those who are sensitive to it. For many people it will take an elimination diet and food diary to find out all of their issues, but bear in mind that everyone's issues will be different, and not everyone will end up recovering using the diet that works for you.
Look up the "baking soda test" ...it is a nice home test to see if your daughter could have low stomach that is triggering the ulcers or creating the perfect conditions for ulcers to develop....mastic gum as has been mentioned is popular for ulcers....you might also try some cabbage juice....it is a home remedy for ulcers....here is the research on it...https://www.hhmi.org/news/excessive-growth-bacteria-may-also-be-major-cause-stomach-ulcers ...I hope this is helpful but it is not medical advise.
Perhaps you should start another thread in say the Leaky gut and food intolerance area? I am myself have Celiac and UC, and when I started eating meats again recently I found I felt better on Grass Fed Longhorn from a local farmer and other grass fed beef. There is a inflammatory issue with grain fed and couped up animals and it even effects the omega ratios in the end meat thus causing inflammation, not gluten.
This thread is getting a bit out of focus, we are trying to help someone else so key coverage of in some people meats can be issue if the animal is eating grains/gluten and it can trigger a inflammatory response. So trying meat Grass Fed and Finished could help some people.
Anasss, (Not to Moderator's I am going to list two links and this might go two paragraphs)
I do a lot of research and the "chicken" topic containing gluten has come up before.....so I bookmarked the research...other foods have toxic peptide sequences that mimic gluten in the body...this was studied circa 2007...https://journals.sagepub.com/doi/abs/10.1177/1082013207077954 entitled "Computational Characterisation and Identification of Peptides for in silico Detection of Potentially Celiac-Toxic Protein"....chicken is listed as a potential toxic peptide for those who react to gluten...I will quote from the abstract " Rich sources of celiac-disease-potentiating peptides were wheat gliadins, barley hordeins and rye secalins as well as low-molecular weight fractions of glutenin. In addition, amino acid sequences with a high degree of identity to the toxic peptides examined were detected in maize zein, oat avenin, protein of rice, yeast and chicken muscles, as well as β-casein and galanin." this sounds like the problems you are having.
the other link research that might help you is this study of 14 food allergens done in china that list how other food allergens can cause an autoimmune response....this is not a gluten response but it is an autoimmune response...https://www.ncbi.nlm.nih.gov/pubmed/23301096 see the 4 images/graphs at the bottom of the abstract that show's other foods that can trigger an immune response.
I hope this is helpful but it is not medical advise.
2 Timothy 2: 7 “Consider what I say; and the Lord give thee understanding in all things” this included.
Posterboy by the grace of God,