I would not worry at all. This is just a new area to explore and have fun with. There is no harm in it.

But then, I have an entire bookshelf of books, modules, etc. I have a mace on the shelf and I use a stiletto as a letter opener.

If she starts becoming obsessive (building Grimtooth style "step and die" traps in the hallways, etc.), you might want to consider seeking professional help.

"It's not a pod - it won't hurt you" - Robin Williams: Reality, What A Concept.