It's funny, but your intentions of attracting our attention to the chin makes me notice that the chin of the original three pictures matches that of known pictures of Stanley Ann Dunham quite well.
In the picture I post which highlights her tooth, she does indeed appear to have a very long chin.
Thanks for pointing that out.
UNFORTUNATELY IT'S NOT QUITE LONG ENOUGH:
But we've been through that before, haven't we?
KEEP YOUR EYE ON THE TOOTH!