Roger, This is called aerophagia. Is she being treated with an Omeprazole type med for GERD/Acid Reflux? This may help....at least it helps me with swallowing air. Look up conversations on the aerophagia...there have been a few lately. Some have said to keep the head bent in a certain position..for me I have not found this helpful...plus I have cervical issues and can not hold me head in any position for too long.
I'm only a sufferer, not a medical pro. What I post are my thoughts as a sufferer, not that of the ASAA. As a moderator on these forums I oversee the posting rules. This is the internet, always discuss what you read with your medical team.