With regard to knocking-out of front teeth, I saw a reference to that being a "satanic" practice. Could be that this extends to incisors also. I'm guessing wildly.
IF they were not missing before she disappeared and were gone after, then this relates also to the idea that removal of the LEFT FOOT is part of "satanic practice".
FresnoDa has many articles and links for this info and one of the centers this is in that area of California. A coincidence!?!?!?!?!?!