Background Pony #4251
Why would a telekinetically held sword hneed a handle? It's not like she'd cut her magic field. Better to stick another blade in its place. In fact, I'd say the best unicorn weapon would be a double-bladed dagger or rapier or even an oversized needle, as without the body's momentum behind the strike they can only rely on piercing attacks, like in the gaps between armor plates. Unless you're Luna or someone similarly powerful, then I guess you can swing a blade with enough force.