How do you talk after avoiding the conversation?

Subscriber question of the week.

Helena, I have a 14 year old ftm daughter who came out to her father and I 4 months ago.  When this happened, her father's response was initially stoic and my response was one of acceptance.  Since then we have both done our research and believe that all of the types of influences that are typical for an ROGD child were at play here. We understand our child has been suffering believing this for 1.5 to 2 years.

We live in a small suburb near a major metropolitan area, have generally given our highly intelligent daughter a good life. Do you have suggestions on how to discuss with our child after a long period of avoiding the topic that there may be multiple reasons for experiencing Gender Dysphoria?  And to have them open up to the idea of that and explore?