I'm Karen, the Fixodent Community Manager. I don't think you're being too obsessive. I understand this is a difficult time for you, and you need to be sure you've chosen the right dental professional for your situation.
You may have already seen my reply to your first message, but be sure to visit www.gotoapro.org. This is the website for the American College of Prosthodontists, and their site has a tool where you can locate board certified prosthodontists in your area. Here's a direct link: http://www.prosthodontics.org/abp/locate.asp.
I'm wishing the best for you.