Interesting, that would be a brutal effect, I imagine she has a chance to see trash as treasure, so you could get a full haul of treasure then cash it in and only find 1 or 2 things of value in there. That definitely would be a mod that would be around 100k.
And yea siren song could have items and possibly enemies that can't be seen by her. Maybe a wandering or chasing enemy that she can't see, but the closer it gets to her the more static interference happens on your end. 🤔