I love "She's Not There" and it's a bit annoying that it appears to be the only CH studio track not included in the deluxe editions. However, it's also the only cover song CH has ever recorded in the studio so I can see how that might have resulted in its exclusion. But man, I think it's a great recording and totally fits the ToLM vibe better than any other non-album track in the CH catalog.
It's really not that hard of a song to track down. The Other Enz CD is on Amazon for $27. Unfortunately is virtually the only song on that collection that is worth owning, so that will probably be the most you have ever paid for a single song. But hey, you get more copies of the Byrdhouse tracks! I guess "Dots on the Shells" is pretty decent too.