My mom's dog is a piece of shit but I don't want to tell her.

Before I get into the details my moms dog is a very sweet, very well trained, and well behaved dog. She's like a member of the family. My mom has her, I have mine, and my dad has his. So let's just move on to the story because I'm angry.<br><br>I used to foster dogs for our local shelter. These were all nothing but good dogs. I had fosters for about 5 years with nothing but good experiences. Now after what happened I'm done. Hopeless, done, out.<br><br>It was my birthday. I received a text from my spca contact. She said there were two badly injured dogs coming in. I got to the shelter. Obviously they were in bad shape. I was told one was a pit bull the other was a German Shepherd Dog, it was clear that they had been badly beaten. I offered to foster them both. I was told they'd need to be quarantined before I could take them home. I never thought about it before, but I'm making sure I only foster dogs that have been there at least 2 weeks I don't want any surprises.<br><br>About a week later I go back. They said these dogs are very timid and would need training. They said that they're dogs are friendly though. I said fine. I went on and picked them up. And brought them home. I had another dog. My dog was very friendly and nice. I didn't want to introduce them right away. Thank the lord I didn't. I decided to keep the two I had separated from my dog and my moms dog. I kept my dog in the living room, my moms dog in the office, and the two foster dogs separated in the two bedrooms.<br><br>Now to the point. That night my moms dog woke me up barking and whining. She was in the office. When I opened my door I heard hissing and growling. I thought it was strange. The foster dogs were acting like cats. I thought nothing of it and went back to bed.<br><br>The next day I decided to go into the foster dogs room. GSD was acting all happy and friendly. But the moment I went towards the pitbull it lifted its head snarled and began to growl. I ran out of the room. I thought nothing of it. I grabbed the foster dogs food and water bowls from the room. 3 bowls and nothing happened.<br><br>That night. I woke to my mom screaming. The foster dogs were in the living room. My dog was being held down by the foster dogs teeth. My moms dog was completely dead on the floor. I grabbed what I could (a broom) and hit the pitbull with it. He let go of my dog. I grabbed a blanket and threw it over him. Somehow at 2 am. I was able to get the foster dogs back in the bedroom and close the door. I called 911. I walked out the house and waited. I knew the cops would come in. They'd see the pitbull. And they'd kill it. <br><br>I never got to check on my dog. But with the squad cars arrived the fosters started whining and trying to get out of the bedroom. One cop came in and said shoot them both. I said I couldn't do that. I called my mom. I told her the dogs were out. Her dogs dead. I'm sorry I didn't stop them. I just didn't expect them to be that way. They came in. They wouldn't let their dogs out of their car while animal control wrangled up the fosters.<br><br>I got to check on my dog. She had puncture wounds in her stomach but she'll survive. Thank the lord.<br><br>My mom doesn't have a dog any more. The fosters are gone I don't know what happened to them. I kill myself with guilt over this. And I'm done.<br><br>My mom lost her dog. I don't want to have dogs anymore. Everytime I see a dog I see those two. I see my dog bloody. I imagine what my moms dog looked like. I did this. <br><br>I know I didn't do anything wrong but I feel guilty. I just wanted to help some dogs. I just wanted to help.