Hello there NLW-AW and thank you for sending me a PM as I probably would not have found your reply. I find this site baffling at the moment!
Are you in the UK? I find mainstream medicine is very slow in this area and they are not keeping up with research that is being done.
My own Gastro recommended a drug (Domperidone) which has now been withdrawn by NICE and can cause cardiac arrest, so I would not have wanted to use it - especially not recommended over aged 60 which I am.
It might be helpful if your daughter looks into Gastroparesis (maybe google for info) as that sounds to be more the kind of thing that is involved for her and it is recognised in the UK http://www.nhs.uk/conditions/gastroparesis/Pages/Introduction.aspx
Have they looked into this?
It's known as a motility disorder and most of the drugs used for it have been withdrawn in the Uk because of possible risks. I think Domperidone is still used for short courses if there is nausea/vomiting.
I have also just found that there is some great research into FD being done mostly via a brilliant man called Prof Nick Talley who is Australian. If you google you will probably find some more out, but here are a couple of links....
http://www.newcastle.edu.au/profile/nicholas-talley
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4070654/
He has also done some research in the last few years comparing pain killers to help and Amitriptylene came out as useful compared with an SSRI, so I am thinking of asking for that. I had not heard of Lyrica being used for this but I see it is used for fibromyalgia pain. Not sure it would be so good for me as I have lowish platelets and it sounds as if could affect that.
It is quite hard to find useful info to help with FD but as you say, changing diet helps a lot. I have been dealing with FD for years actually - at least 10 and it has got worse over last 5, but didn't know that is what I had. I was diagnosed with Gastritis/Duodenitis some 11 yrs ago and thought that's what I had still! So in this time my diet is VERY restricted now - I eat virtually no processed foods - and as I also have IBS I am further restricted. I do have meat, but as you say, red meat not so good, though I am still eating some. I have chicken mostly, and fish, nuts, seeds, a little fruit (mostly apples, pears and bananas), most veg but limited carbs, sheep or goat yogurt, and a little goat cheese and eggs and coconut and olive oil and a little Apple Cider Vinegar. Not much else, but at least it's a balanced diet.
I don't actually have nausea, and I pass motions 2 or 3 times a day, so no problems with that. It's just the pain of it drives me to distraction. I have bad bouts every 3 to 4 weeks and they last around 5 days, and then the bout passes usually.
Like your daughter I have been using smoothie maker for some years (a Vitamix) but now for some reason I am having more problems with the liquid. If I have small amounts it is fine, but I cannot drink very much in one go. Solids are easier again though.
The chap I mentioned above has identified 2 sorts of FD and one is your daughter's sort which is more to do with motility, and the other sort is the kind I have which is more to do with pain. It sounds as if she has pain as well though, so maybe she it's not that simple!