She was chosen by Sky News Broadcasting in London to speak about the Philippines' coverage of the Royal Wedding.
She was also the co-anchor of the late newscast entitled Pilipinas News, replaced Aksyon JournalisMO, together with Jove Francisco and Paolo Bediones.
On July 21, 2014, Mercado was moved to noontime newscast Aksyon sa Tanghali together with Raffy Tulfo.
On July 15, 2016, Mercado left TV5, her home network for 12 years to become the spokesperson of the Department of Transportation (DOTR).
[5] On February 12, 2018, Mercado joined CNN Philippines, as she took over as a new anchor of the Evening Edition of Newsroom replacing Mitzi Borromeo.