Oh no, I am so sorry! I discovered this thread late, in fact somebody told me to read it, because I love mice (and rats)... and now I read this sad ending! 8...
I am so sorry for you. RIP little mousie!
Unfortunately, I cannot see the earlier photos, but the photos I could see showed a very cute, adorable little creature. You did so well, and don't blame yourself for losing him.
x>>