On April 7, 2010, Go and her manager, Veronique del Rosario-Corpus of Viva Artist Agency, signed an exclusive contract at the GMA Network Center. Rachelle’s first project with the Kapuso network was the Sunday musical-variety show Party Pilipinas, where she joined fellow Viva artist Mark Bautista.
For the second half of 2011, Go released her sixth album entitled Unbreakable, with “Masasabi Mo Ba” as the first single and her own composition, “Whispered Fear” as her second single. She also appeared in the GMA 7 drama series Nita Negrita, as Amanda. She was also a mentor in Protégé: The Battle for the Big Break, a reality-based singing talent show. Go made her debut in musical theatre that year as Ariel in The Little Mermaid, for which she won a Best Actress award from Broadway World Philippine Awards.