[3] Born in Rio Fortuna, Santa Catarina, Ketlen started her career in a football school in her hometown.

[4] She left the club in early 2011 to join Bangu,[4] but ended the year at Vitória das Tabocas,[6] where she also won Campeonato Pernambucano de Futebol Feminino titles during her spell.

[4] On 14 September 2020, Ketlen scored her 100th goal for the Sereias da Vila in a 2–0 win over Minas ICESP [pt], becoming the first woman to do so at the club.

[15] She made her full international debut on 18 October, coming on as a second-half substitute for Daniele in a 2–0 win over Argentina at Estadio Omnilife in Guadalajara, Mexico.

This is due to Pernambuco residents thinking her light skin, blue eyes and fair hair bore a resemblance to the fashion doll manufactured by Mattel.