All efforts to re-discover the method for creating these chains have proven fruitless. Research is currently underway to determine an alternate containment plan, but the possibility that anything can keep the Devourer from entering our universe is slim, especially as the original material used to create the chains (namely, the bones and sinew of another Devourer entity) are no longer in existence.
Look, I'm a little more complex than you guys. And - no offense - but I've always suspected that a lot of what you do in a year can be knocked out in a couple of hours.
With this tale, I take an already OP character and elevate her to be roughly on par with Rick Sanchez when he single-handedly took out his version of Thanos while black-out drunk. I also hopefully made her sympathetic during a time when she was at a low point.