Her greatest moment came at home at the 2004 Estoril Open when she defeated Julia Schruff, the previous year finalist, 3–6, 7–6, 7–6, to become the first Portuguese female player to win a singles match at the tournament.

In February, she entered her first tour event outside of Portugal in Pattaya and reached the second round, defeating Jessica Moore 6–2, 6–1 before losing in two sets to home player and sixth seed, Tamarine Tanasugarn.

On 18 June 2009, Silva qualified for her first Grand Slam tournament at Wimbledon, where she lost to second seed Serena Williams, 1–6, 5–7 in the first round.

Her next WTA Tour event was the Tashkent Open in September, where she lost in the first round to eighth seed Galina Voskoboeva.

Her last match came in June during the Wimbledon Championships qualifying tournament where she lost in the first round to Michaëlla Krajicek, in straight sets.