The owner of Haras Firmamento, Juan Carlos Bagó, agreed, and she was sent to Hipódromo de San Isidro for training under Miguel Ángel Garcia.
[7] She next ran in the Group 1 Gran Premio Saturnino J. Unzué over 1200 meters on the turf at Hipódromo Argentino de Palermo.
[8] On April 13, Miss Terrible ran in the Group 1 Gran Premio Eliseo Ramírez, where she turned the tables on Beau Fete to win by a length and a half.
[9] Miss Terrible proved her abilities on the dirt when she won the 1500 meter Group 1 Gran Premio Jorge de Atucha by six lengths on May 4.
[11] A month later in June, she won the Group 1 Gran Premio de Potrancas over 1600 meters on the turf,[12] despite the challenge of a strong wind.
[13] Twenty days, Miss Terrible later the Group 1 Carreras de las Estrellas Juvenile Fillies over 1600 meters on the dirt.
With the withdrawal of Haras La Quebrada's Beauty Halo, the Polla de Potrancas was considered a sure thing for Miss Terrible.
[18] Although interested in pointing Miss Terrible to the rest of the Triple Crown, owner Juan Carlos Bagó decided to prioritize Miss Terrible's health after her "very agitated campaign, with strong efforts" and pass on the next leg of the Triple Crown and on the Group 1 Gran Premio Selección (Argentine Oaks).
[25] After transferring to trainer Wesley Ward's barn, Miss Terrible finished sixth in an August allowance race, once again setting the pace before fading.
[32] For the Las Flores Handicap, Miss Terrible was ridden by jockey Alex Solis, who had gotten the mount after running into trainer Bradley Ross in the mall.
Coming from the one post, Miss Terrible, again ridden by Alex Solis, quickly went to the lead and stayed there to win by one length.
"[37] Miss Terrible's return to Grade 1 company came in the May 30 Breeders' Cup Gamely Handicap, which had been her first race in the United States two years prior.
[40] Less than a month later, Miss Terrible was assigned the top weight of 118 pounds in the Grade 3 Arlington Matron Handicap, run over 11⁄8 miles on the dirt.
[41] Miss Terrible pressed the pace set by Indy Groove, but started to lose ground down the backstretch before tiring badly in the stretch to finish last.
"[42] The Grade 3 Thoroughbred Club of America Stakes, run on October 16 over six furlongs on the dirt at Keeneland, was Miss Terrible's next start.
Under jockey David Flores, she broke well and held back in the early part of the race in seventh position before closing in the stretch to edged out by a head by Reunited, finishing second.
[54] Haras Firmamento has tried to buy back Miss Terrible multiple times, but the Hammersmiths have declined to sell her, stating that she's "an incredible mare".