Vilches was born on 21 December 1984 in Viña del Mar.[1] She is the daughter of Omar Vilches Moraga and Mónica Fuenzalida Peña.[1] She is married to José Sotelo Alfaro.[1]
She completed her secondary education in 2002 at Instituto Superior de Comercio Alberto Blest Gana in Viña del Mar.[1] She pursued higher education at the University of Playa Ancha in Valparaíso, qualifying as a geographer.[1]
Professionally, she has worked at the Municipality of Petorca, Valparaíso Region, where she founded the Municipal Office for Water Affairs.[1] She has also been noted for her work with local communities and collective spaces.[1]
Vilches is an environmental and water-rights activist associated with the Movement for the Defense of Access to Water, Land, and Environmental Protection (MODATIMA) in Petorca.[2][3]
She was a founder of the first Municipal Office for Water Affairs and of the Union of Rural Drinking Water Systems of the Petorca River Basin.[1]
In the elections held on 15–16 May 2021, she ran as an independent candidate for the Constitutional Convention representing the 6th electoral district of the Valparaíso Region, on a Comunes party slot within the Apruebo Dignidad electoral pact, receiving 19,116 votes (5.82% of the validly cast votes).[1]
