Well your sister is partially right. The stones won't stop whether you have a gb or not. By the time your gb is affected with stones, you are in some serious liver congestion with stones. Take it from me, I had my gb out for lack of information. My doc outright lied to me when he told me my symptoms would go away after surgery.
My symptoms continued...the pain, nausea, diarrhea, indigestion. I had my gb out in Oct of 2002 and by June of 2003 I was miserable. I read for six months before I flushed and I just wish that I would have tried to save my gb. I will never know if I could have avoided surgery, but I needed to flush anyway. I have passed over 1600 stones in 10 flushes. I have done two rounds parasite cleansing. (And yes, if you are full of stones your liver is full of parasites).
I have to say that it took 5-6 flushes over a couple of months (on avg every two to three weeks) before I felt more human. And after I passed a few stones that were as large as a quarter it was quite a turnaround on my pain and nausea.
If you flush and a "stone gets stuck" a dose of Epsom Salts will get that stone to pass thru the dilated duct.
I hope you consider what I have said. Surgery does not fix your symptoms. Only you can. If you listen to your instincts and help cure yourself thru the knowledge gained within this site.