Sounds to me like this conversation went pretty well. You had a lot of great, calming, validating statements -- "Speak your mind" and "Fear can do that" jumped out at me as sounding particularly strong. Great job!
As for the "awkward pause," it seems to me that such conversations between two people transitioning from being together to no longer being together are bound to have at least one every once in a while. Everyone's trying to learn the new dance moves but not sure if they should keep some of the old ones.
