Oh well now she is much healthier.Thats something to be glad about.

No effence but you dont really co-own her...
theres nothing saying you do, you dont pay anything towards her so what made her half yours?
You would of been her handler not her co-owner.

I co-own Rowdy.
I pay monthly for him but its still the ladys horse.
She sold Trigger and I had no say in it.
I didnt want him to go but its her horse and she dose what she wants and even though I actually paid half the board ect I didnt get to have a say in him leaving.

You have the other dog to show anyways.
Just be happy for that.

Ya it sucks your out a show dog but you learned alot and will be ready for the next one that comes. Maybe her mom decided she wasnt fit for the show ring or didnt want to put all that money into it because like you said you dont pay for anything and showing is expnsive as you should know.

Are you sure theres no other sport.
What about flyball?


EDIT: Also sounds like she has a smart mommy if there are male dogs running around not fixed. You dont want to add to the population of unwanted dogs right? And greater the risk of cancer .