Thank you! Eating smaller meals and drinking more water seems to be helping her, but I will pass along this information, because everything helps.
Because we often have people here whose symptoms look like a form of hemicrania, I wonder if you would say a little more about your situation. Here are my questions, but of course you don't have to answer all (or any) of them. I really hope you are on track for something good to happen, because I know it's been very rough for you.
You mention that you have been taking the Indo for the last couple of months, and it sounds like you still are not sure whether it's PH that you have. Did you start out on a low dosage and then increase it based on your tolerance? What is your current dosage?
How has it affected your attacks?
What will tell you whether or not it's PH that you have?
As I recall, oxygen was somewhat effective for you. I don't remember about triptans. Do your doctors have a diagnostic basis for thinking it's a hemicrania, or is it just that you haven't responded well to all of the conventional CH treatments and they are trying something different?
In addition to taking the Indo with meals (which I imagine is partly a way to protect your stomach from the harshness of Indo), are you also taking something else to protect your stomach?
Have your doctors discussed any of the other things, aside from Indo, that sometimes help with hemicrania, or have you looked into them? One is boswellia serrata, and there is a discussion of others here: https://americanheadachesociety.org/wp-content/uploads/2018/05/Hemicrania_Continue_June_2015.pdf One person has said that busting every five days kept her HC under control, and I think the vitamin D3 regimen is supposed to help (but I feel like you tried that).
Thank you for anything you choose to share!