I'm so sorry about your experience, but glad she is ok. I had given Mylee a nylabone once and she was able to get chunks chewed off too, and she had one of the really hard ones and was able to chew off pieces of that as well, but not as big as the softer nylabone, so we don't care for them either. She is a crazy chewer!
It really seems nothing is 100% safe. Even when you think you've puppy proofed
everything something out of the blue you never dreamed of can happen. You know those rope toys you mentioned? I almost lost a cat strangling to one of those when a string (a tiny single thread strand

) came loose. He then got to playing with it and got tangled in that loose string. So now I don't like those as play toys either. I am super paranoid over everything anymore.