This page explains how to find the Shee Vaneer shrine and solve the "Twin Memories" puzzle.
How to Reach the Shrine
This shrine is on top of the southern Dueling Peaks mountain. It is recommended to climb up the south side of this mountain, because the south side has a rough surface that is easier to climb. One way to go there is to go to the top of Dueling Peaks Tower, then float south across the river, then climb southeast into the hills. From there, make your way to the south side of the Dueling Peaks mountain and climb your way to the top.
How to Solve the Shrine
Read the sign near where you entered the shrine for a hint about solving it. Then go up the ramp and wait for the moving platform to come down. Get on the moving platform, then walk onto the platform up above. Look downward and make a note of which target holes have orbs in them.
Then from this upper area, float around to the other side of the pillar near where the moving platform stops. There is a chest there that contains an Eightfold Longblade.
Then go to Shee Venath Shrine and make a note of the starting positions of the orbs there. Then come back here and move the orbs so they match the positions of the orbs in Shee Venath Shrine. When you do, the gate will open.
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Go through the gate and talk to Shee Vaneer to get the Spirit Orb.