Dellacqua next played the Dubai Tennis Championships losing in the second round to Lucie Šafářová despite winning the first set. She then traveled to the Qatar Total Open where she lost in the first round to Venus Williams again after taking the first set. She next played at the Malaysian Open as the 3rd seed but lost in the first round to eventual semifinalist Hsieh Su-wei. Dellacqua then withdrew from the BNP Paribas Open where she was defending quarterfinalist points. This saw her fall down to 42nd in the WTA rankings. Despite this she was the 32nd seed at the Miami Open where she lost in the second round (after having a first round bye) to Belinda Bencic in three sets. Dellacqua started her clay season at the Family Circle Cup where she again drew Bencic in the first round, she then lost in straight sets. She had better luck in the doubles partnering Darija Jurak, where they reached the final but lost to the partnership of Sania Mirza/Martina Hingis. Dellacqua then played the Premier Mandatory Madrid Open causing an upset over former French Open champion Francesca Schiavone in straight sets. She then lost to world No. 9, Agnieszka Radwańska in straight sets. Dellacqua had better success in the Doubles partnering Yaroslava Shvedova. The pair defeated the 6th seeds Garcia/Srebotnik in straight sets and backed this up with a win over Chen/Marosi. They then defeated the 4th seeds Su-wei/Pennetta for a spot in the semifinals where they defeated the 7th seeds and reigning Australian Open champion pairing of Mattek-Sands/Šafářová. They then played in the final against third seeds Muguruza/Suárez Navarro and won the title in three sets. This was Dellacqua's first Premier Mandatory title and her fourth doubles title overall. Dellacqua then withdrew from the Internazionali BNL d'Italia and Internationaux de Strasbourg. She then played at the French Open singles where she lost in the first round to fellow Aussie Ajla Tomljanović. Dellacqua partnered again with Yaroslava Shvedova where they reached their first Grand Slam final as a team. They defeated Chan/Davis, Cornet/Linette, and 8th seeds Garcia/Srebotnik to reach the quarterfinals.