Time for her to be wormed AND get a full blood panel if she does not have any issues with eating disorders. Now I hope she does not go into modeling, its NOT the type of woman I would want for a mother, daughter or aunt! I like to look at women with some "substance", curves in the right places that shows WOMAN miles away!
I wear corset during my CW reeanctments and they are comfortable, however, you do need to relieve the pressures once in a while particuarly in the evening when your body naturally swell during the day, eating small meals throughout the day and keep cool LOL! Eating meals with corset can make you lose weight but not something I would encourage. Smaller the meals, less salt, no pop would help a long ways and drink lots of water! Sorry I dont have that kind of wasp waist figure like the Victorians did back in those days but enough to bring the flabs closer to body, and the babies stay in their respective places, that's the corset's job.
For those who are interested in the "unmentionables" during back in those days, go visit the FB Civil War's Closet, it is very informative and covers all agenda in everyday life of people whom they would never dare to discuss about unmentionables, taboo, sex, social manners, table manners, dancing, behind the bed scenerios, prostitutions, medicines, etc. and all the things you would not dare ask because your great grandmother or grandma would sushed you for it.