Sorry to hear about the smaller one, but you know what, 1 out of 2 isn't bad for such a sensitive fish. Was at a LFS who had a pair of bipartitus last week but they looked just a bit too thin so I passed.
Could you tell me what other fish you have in your tank? I've still not moved my leopard out of the fuge as I am a bit concerned that will revert all the progress I have made with this fish when she experiences how 'active' my DT is. I'm worried about a large dusky wrasse (though not reputed to be aggressive), a flame, and a yellow tang (a mean ba$tard).