Board Thread:Questions and Answers/@comment-8028394-20130626122453/@comment-9505008-20130626145534

She wasn't too difficult to unseal, and I am in 81+ bracket. I got her yellow sealstone on floor 4, and I managed to unseal her fairly quickly. And I only used 1 spirit water!

Having said that though, it may be a different for you seeing as you don't have any stones yet :x, and as more people climb higher on their tower, people will strengthen their defenses to avoid getting their stuff stolen.