Forgive me for intruding, but some of your comments are disturbing to me.
1 Your sis was on 6 meds for years, and now ONLY takes 3, and will take Eloquis forever.
I know I sound like a broken record, but does your sister consume ANYthing with caffeine??

2 I know nothing about it, but Heart Calm supplement sounds helpful. But scary bouts of A fib. Do you consume caffeine from coffee or chocolate or Mountain Dew?

3 Major digestive disorders for 11 years?? I would bet due to eating or drinking the wrong things, and/or wrong combinations.
I had severe stomach pains for years that doubled me over. Have not had them for many years due to change in what I eat. The biggest cause for me was diet colas, idaho baked potatoes, cheese, too much fruit, ice cream, bread. Eating too much at one time. I suggest you get a notebook, and daily write down the items you eat. Review them each day and especially after digestive problem. Does it sound like a good combination?
The internet says also artificial sweeteners, highly processed foods, need more foods with fiber, too much dairy.
Like some support groups say, insanity is doing the same thing over and over, and expecting a different result. You are not alone in your health issues, because the stores are chuck full with unhealthy foods and drinks that they try to boast as healthy.
Wish you the best in getting healthy. I believe it is possible, but we often need to change our choices to make it happen.