I put my reply under Pet Behavior but let me just say here again how very sorry I am about Angel's death. To lose a pet that way IS heartbreaking and there is no doubt that it was a very painful and hard lesson learned. But you need to be kind to yourself. You didn't mean for this to happen and your dog was just being a dog.

Some dogs get along very well with rabbits and will leave them alone while others will go after them.... It's a hard call to know when a bunny might be safe with a dog. I hate to be the one to say this but I would advise that you not to get another bunny while you still have your dog, it just wouldn't be worth the risk.

Hugs to you. Be kind to yourself. It WILL get better.....