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Thank you both. I haven't had access to the test results but will get them and post here.

The ulcers are prepyloric ulcers. Not sure if that makes any difference. 

Duodenal ulcers are not uncommon either and often result from H.Pylori infections. https://www.healthdirect.gov.au/duodenal-ulcer

Just vitamin b1?

I had what was termed "lesions," and normally ulcers are in the stomach, rather than the small intestines. I'm not sure why they would want you to have her continue to eat gluten, since she had a positive blood test, but as her doctor said, if she is uncomfortable and having symptoms why not have her go gluten-free at this point? If her symptoms improve, it would be another indicator that she has celiac disease and/or gluten sensitivity. This article has some detailed information on how to be 100% gluten-free, so it may be helpful (be sure to also read the comments section.):