There is a peace in the middle of God's will, but it ain't easy.

When I was in Haiti a couple of weeks ago I was sharing with a guy how Anna and I discerned that God was calling us to Haiti. He shared from his own personal experience that there is a peace in the middle of God's will, but acknowledged it ain't always easy.
I know this to be true now. Anna and I are preparing to move to Haiti for an extended period of time and I believe with everything in me that this is what God wants for us. That said, the weeks leading up to our departure have not been easy. Currently, Anna has been diagnosed with Pseudotumor Cerebri which basically means that fluid in the brain is not draining properly which is causing swelling which is causing head and neck pain, and vision problems. When confronted with this diagnosis the question has arisen, what does this mean for us and our impending departure for Haiti. The answer to that question is nothing. God is not a God of confusion and His calls are not wrong. We will continue working towards the thing that God last told us to do until we get new or different marching orders.
I am curious of the origin of this sickness, a trial or a temptation. My first thoughts go to satan based on the assumption that he doesn't like what the Lord may do for His kingdom through our obedience. However, I do realize that it could be of God in a process of refining our faith and removing the dross from our faith. Prior to this issue I had been reading in Job and actually just finished yesterday. I noticed something yesterday in the eleventh verse of the last chapter that had escaped my attention until that point which was "And they showed him sympathy and comforted him for all the evil that the Lord had brought upon him". At the beginning of Job it is evident that satan strikes Job, but only after the Lord allows him to. So we know the origin of the afflictions, satan. In conjunction with that knowledge, I considered it very interesting that at the end of the book of Job it said that the "Lord had brought upon him". The thought that comes to me is that "we know that in all things God works for the good of those who love Him, who have been called according to His purpose".
In conclusion, the thought of being there is peaceful. Preparing to go is peaceful. Watching my wife hurt is not easy though. But this is the will of God and I desire none other.