Hi, Sleepydf.
It is hard to come out to people we love. I was "chicken" when it came to telling my wife. It took me six months to work up the courage. But, eventually, if you are going to live your life as yourself, they have to be told. My mantra fo weeks was, "Gotta do it. Gotta do it." Eventually, I did it, and immediately, I was floating with relief.
You will do it, too, when you are ready. Just remember that you love her, she loves you, and you don't want to hide.