Probably the same route her sister took earlier in the day. Past the riffles, up to the falls, and then keep going up the river.
From explore.org's Riffles Bear Cam - https://explore.org/livecams/brown-bears/brown-bear-salmon-cam-the-riffles, Brooks Falls Brown Bears Low Cam - https://explore.org/livecams/brown-bears/brooks-falls-brown-bears-low, and Brooks Falls Brown Bears Cam - https://explore.org/livecams/brown-bears/brown-bear-salmon-cam-brooks-falls at Katmai National Park