I've never met Charlotte or Frank, but I've admired Cowboy from afar. I'm VERY sorry to hear things aren't improving as we'd all hoped. I'm keeping them all in my thoughts and prayers. We all know Cowboy is getting the best care possible and they obviously love him deeply.
I'm so sorry to hear that Cowboy's not back to 100% (actually worse than that). Charlotte and Frank, you are in my thoughts and Cowboy will be in my prayers. I pray that they can figure out what the problem is and begin proactive treatment ASAP.