On 30 March 2012, she defeated Paulina Cardona to capture her first championship, the vacant WBA Fedalatin female featherweight title.
On 28 April, she made her first defense in her native Venezuela, defeating Diana Garcia via technical decision.
On 8 December, she defeated Maria Elena Villalobos to capture the WBA female interim super bantamweight title in Jamaica.
On 16 February 2015, Sánchez was defeated by WBA female interim super bantamweight champion Liliana Palmera.
On 5 August 2017, the pair fought in a rematch, with Palmera now owning the full WBA female super bantamweight title.