08/10/2010 05:12 am ET Updated May 25, 2011

Aubrey Sacco Search In Nepal Hampered By Lack Of Witnesses, Records

(CNN) -- Three weeks into his personal search for his daughter in Nepal, Colorado lawyer Paul Sacco keeps running into this: The last trace of 23-year-old Aubrey Sacco was at a hotel a day after she began hiking in the Asian country in April.

Still, Paul Sacco plans to keep looking, buoyed by his belief that someone must have noticed the outgoing, 5-foot-tall artist and yoga instructor sometime after that. He also was given hope by the local Buddhist monks, who tell him they sense she's alive and still in Langtang National Park.

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