I can barely even gather my thoughts to write this post. This is the worst thing I've ever had to deal with. The only way I can get this out is to just be blunt and say it. I'm afraid that it is going to sound totally heartless and that I don't care. That couldn't be farther from the truth. I'm completely devasted by this.
Last Thursday I got a call from my ex-husband. He was watching my dogs for me b/c I was going to be gone most of the evening. We still live in the same apartment building and share a yard so he offered to watch them so that he could still spend time with them. Well, he called me and told me that Mystic and Blaze got in a fight. He said that he had left my 3 in the yard while he took his 2 back inside and that when he came back out they were at each other. They've got into a few scuffles before, never anything more than minor scratches though. I asked how bad it was and he just said that Blaze was bleeding. I told them to take her to the vet b/c I didn't think they (him and his brother) could clean her up very well. That's all they said to me, so I didn't think it was too bad. Once they were at the vet, he called again and told me they wanted to put her under to clean her up b/c she was in a lot of pain. I was starting to be concerned about how bad it was, but I was still under the impression it was just a bite. Well then the vet called me later, and I finally got a picture of how bad it was. They had X-rayed her leg b/c she was limping and that ended up showing them that she had some bleeding in her chest cavity. They wanted to keep her over night but warned be it was possible that she could decompress during the night and I might lose her OMG! I was almost an hour from home and starting to freak out at this point.
Thank God she made it through the night ok. When I picked her up on friday she had 2 drains in, one in her ear and one in her throat. They also said she had broken ribs, or rather the cartledge that had calicified had broken. It was bad. But she was so happy to see me, it almost broke my heart. She had been mauled. I don't know how that much happened in the short time he said he was gone. I don't know what started it either, I just have no clue what happened.
I talked to the vet again yesterday when I took Blaze back to have her drains checked. She said, this wasn't just a fight, Mystic intended to kill Blaze. And that next time she probably would. She said they really need to not live in the same house any more.
I think she's right. I knew there was an issue between them and when I am not with them I keep them seperated. The problem is that I know there are going to be times when I need someone else to watch them for me and I cannot let this happen again. Not only that, but Mystic has a history of aggressive behavior w/ other dogs as well. She is just not dog friendly. She also has fairly bad seperation axiety and hip dysplasia.
I can't keep her, I can't continue to risk Blaze. I don't know anyone else that can deal w/ all of her issues either. I know my ex would take her, but he wouldn't take care of her. She'd get food, water and put outside a few times a day and that would be it. Plus he's got 2 dogs already and she'd probably turn on them too. Her separation anxiety was enough reason for most people I know to not even want to watch her. She's truly a sweet dog, but when that switch flips she's 80 lbs of destruction. I know our shelter her would not put her up for adoption. The other option would be re homing Blaze, but I can't do that. She is my heart. Plus, there is still the risk that Mystic would harm someone else's dog.
After considering these options, I'm going to put her down. 
I feel so awful about this. I feel like I am letting her down, I failed her (and Blaze). I promised to take care of them and I can't. I'm sure some of you may think poorly of me for this choice, and I understand that. This is killing me. Everytime I see her I just want to throw my arms around her and bury my face in her fur. And knowing her she'd just sit there and lick my face. She can be the sweetest dog. I don't expect support for this decision, I just wanted to let you all know what was going on.