Perhaps. I remember the Dark Elves and Odin talking about them and the Aether but I honestly don't remember seeing Jane pulled into the portal. Regardless, it still is problematic in the fact that the portals were created by the convergence not the Aether and the chances that a portal would just so happen to open up in the cavern the Aether was hidden in of all the places in the nine realms stills strains credibility. Unless, we are to believe it can open up portals and the like. It is less of a stretch though. Sure the ring wanted to be found. But it still requires Bilbo to stumble into the cave.