I have no doubts that your friend did grow sick over a period of 15 years. My question is "Did Silicone cause her health deteriation?". Silicone is in our food, in medical replacement organs, knees and joints, eyes, brain stints; and has been for nearly 50 years. There has NOT been any study that shows that silicone has caused health problems. Simply put, sometimes bad things happen to good people.
I don't know. Scientists on both sides disagreed on what may have caused the illnesses. I've just posted what I know about it... which is very little.