Is she truly comfortable with the size and weight of a mod? It might be a size thing that she has issues with. She might do better with a slimmer and lighter eGo?
Is she resisting
vaping with typical coughing issues? Many smokers resist vaping by exagerated coughing and saying, "That's way to harsh for me!" If she is sincerely having issues with newbie coughing, advise that it is common among new vapors and will soon pass.