SAS, I have been following the Miley/Juni stories from the beginning and I think you have done every possible thing to make it work, but once the extent of Mileys injuries came to light it had to be the beginning of end of Ti`s time with you, no other option.

It has been so hard for you all. For you, trying every way you could think of to make it work. For poor sweet Miley being scared and hurt, and now for poor Ti too. I say poor Ti, for, because of the irresponsibility of that breeder, has to leave probably the only real care, love, and comfort he has known.

Brighter days are ahead though, in fact they look to have already begun. Miley is recovering well from her injuries and looks to be enjoying Juni`s company. Ti has all he needs and is happy out there on the porch and soon will have that new forever home to suit his special needs.
I think Gini hit the nail on the head when she wrote...
... It is now pointless to look backwards and think, could have, should have, might have, wish I did! You are absolutely doing the right thing now and especially working with the good breeder. It sounds as though Ti should be in a one cat household, spoiled rotten. ....
You have gone that extra mile, more than once! I admire you so much!
Hugs
Chris