And as usual Dr. Brennan Fan is correct. From one of the Yahoo comment pages, taken from The Oregonian:
“She said, ‘Hey pretty girl, do you want to drink this?’” Neuwelt said. The woman then threw a cup of un unknown, acid-like liquid in her face. Storro described the woman as an African-American woman in her late 20s, to early 30s, with slicked-back hair in a pony tail. She was wearing a green shirt and khaki shorts.- The Oregonian
Obviously a jigess jealous that she looks like an orangutan, and that her victim resembled a human being.