Middle Mother is the middle of the 3 steep cracks toward the right section of the cliff. A good 5.10 for this area.
Climb up to a horn/flake. The tricky finger crack section above is the crux, and is well protected with cams. The wall steepens even more, but the crack widens in places so you can get a few hand jam rests, and the options for footholds improve. Stay strong for the last pumpy finish on big holds.
The 3 "Mothers" climbs are about 40' right of Beastie Crack on the north wall of the 'Y', on a clean steep section of rock. This is just a little bit before the waterfall starts.
1 set cams from fingers to 3"; nuts. Save some gear to build an anchor at the top, or sling blocks with long runners/cordelette, or tie off dying trees.