Like I said, I know very few people that actually have an actual BPD, and most had something go wrong and the surgeon had no choice but to give them a BPD or something close, or they had it long ago, and many of those folks had it reversed due to problems exactly like your daughter, and some died, so thank goodness she is back to absorbing more.
If you and your daughter aren't already, you MUST be in contact with Vitalady. I don't think TOS will allow me to put the link in here, but just put the .com after vitalady. Vitalady (Michelle) does sell supplements to bariatric patients, but she freely gives advice to help you get and/or stay healthy here, and never mentions a word about her business. Her prices are good, and and she has the formulations of things that work for our altered guts. Don't waste money on supplements we don't absorb.
She also knows the hybrid and oddball surgeries (she's one herself) so your daughter can tell her what she has, and Michelle will know exactly what she needs. My nutritionist was clueless at to my needs, and mine are much more common than your daughters. Her idea of fun is going around the country to weight loss things, and listening to seminars on our special vitamin needs and reading medical data on vitamins, so don't let the lack of letters after her name fool you - she
is the best, and her advice is free.