I would definitely not get a new bed until you're sure she's over this phase. Why waste the money... not to mention the risk of a blockage. Like Dr. Shelli said, I would even be concerned about leaving a towel or blanket around when you can't directly supervise her, as that could also cause a blockage, if she decided to chow down on it.
We crate-trained Lerwick, and he was confined to his crate at night and any time we couldn't directly supervise him. We did not have a bed/pad, or even a towel, in Lerwick's crate until he was housebroken, and when we did finally put the crate pad in, he didn't bother it... at first. Eventually he started dragging it out of his crate when he felt like being a brat, but even then he didn't chew it up.
Now, the arm chair... that was another matter.

I had to wrap an old bedsheet around the chair to keep him from going after it. Something about the chair's fabric made it really satisfying to destroy, I guess. It's the only piece of furniture either he or the cat have ever really bothered.
Good luck... and I hope your puppy learns quickly that beds are not for chewing! Incidentally, Lerwick is no longer confined to his crate at night or when we leave, and he never, ever sleeps on the pad in his crate, or the pet bed out in the living room. Fortunately, the cat has taken up residence on the pet bed, so at least it wasn't a total waste.
