Jim, why hasn't the granite been removed? I will speak to you very honestly here. If the granite had been in my home and had been a concern of mine, hence, getting it tested, etc, it would had been removed. Now, you can sit there and think, yeah, but what if it isn't the granite that is giving off the readings... etc. If you sit there and think, well, the granite cost 30,000 dollars, what throw it out?
Here is where I will honestly answer you, answering you from a cancer patient's point of view. If you don't want to hear the C word, then, why the tests? It is your fear.
Since, I was diagnosed at age 44, I have banged my head against the wall in what caused it. Why? Should I had listened to those who never experienced cancer and chemo? If at all possible, I wanted to know, what stopped my life and took my breath away, what made my kids cry thinking they were going to lose their mom, what made my husband grow old so quickly worrying about his wife he loved so much. I wanted to know to also protect my kids, for what if, the cause was in my home, or my work place, afterall, Non-Hodgkins Lymphoma is an environmental illness.
I spent almost 5 years total on drugs which the oncologist apologized to me for, telling me, it would bring a big man down to his knees, and he felt bad having to inject a woman, a small woman, 5'3, 118 pounds with those drugs. But, Non-Hodgkins is primarily a male's disease, drugs mostly made for men to treat it.
Some of the drugs were 90,000 dollars, another 60,000, I had to pay 20%. Do the math. On top of that figure amount, 19,000 a year for CT's, additional money for MRI's, and a whole lot of incidentals.
Whatever the worth of the granite is Jim, that you and your daughter are testing, over and over; asking yourselves, about the readings given off, it is not just worth it. Do away with the granite, give your daughter peace of mind, give yourself peace of mind. You are not going overboard in doing so, radon causes cancer. Period. I would not allow it in my home. Then, Jim, if the readings are still high, you got to keep eliminating until, you find the cause.
Granite is nothing compared to staying healthy. Once you've been there, you just don't want to ever back, and Jim, I have been there in that pink chair 5 times, and way too long. This I know what I am talking about. Get rid of it, and enjoy getting something nice and new and safe. Then throw a party and invite me.