(Hood River, OR)  --  A 27-year-old woman who's been hitchhiking for the past several months is now considered missing.  Police say Holly Kristen Lester and her male companion were trying to get to Olympia or Seattle via Portland, but haven't been seen since the morning of March 16th.  Investigators say Lester, who had been distraught and has a history of depression, was traveling with two men in a burgundy van before she disappeared.  Police say Holly Lester stands five-feet-two, has curly brown hair and a nose piercing, and was last seen wearing a black Carhartt-style jacket, a black long-sleeved dress, a bright colored scarf, black pants, oversized boots, and blue glasses.