That doesn't sound like a good long-term plan. It sounds like you want her to know, but you're afraid to tell her. How do you think she will react to finding out on her own? Wouldn't she react better if you had a heart-to-heart and told her yourself?
The crossdressing community is one that needs to stick together and continue to be there for each other for whatever one needs. We are always trying to improve the forum to better serve the crossdresser in all of us.