She then won a minor race over the same distance at Pontefract at odds of 9/2 and then defeated Songorella by one and a half lengths in the Hilary Needler Trophy at Beverley Racecourse in May.
[5] In the Group Three Cherry Hinton Stakes at Newmarket Racecourse in July Devon Ditty started 15/8[7] favourite despite carrying top weight and racing over six furlongs for the first time.
Eleven days later she added a win in the Princess Margaret Stakes at Ascot, easily beating Innini, Ring Lady and Strathspey at odds of 8/11.
[5] Devon Ditty was dropped back in distance and matched against colts when she contested the Flying Childers Stakes (then a Group One race) over five furlongs at Doncaster Racecourse in September.
Starting the 2/1[7] second choice in the betting, the filly took the lead from Abdu in the closing stages and fought off a challenge from Greenland Park to win by three quarters of a length.
Devon Ditty ended her season at Newmarket in October when she started 11/8[7] favourite for the Cheveley Park Stakes, then the only Group One race in Britain restricted to juvenile fillies.
After being restrained by Starkey as Penny Blessing set the pace from Do Be Daring, the favourite produced her customary late run and got the better of a sustained struggle with Kilijaro to win by a neck.
On her first start for her new owner she was dropped back in distance for the Gus Demmy Stakes over six furlongs and recorded her only win of the season as she prevailed by a head from the colt Son of Shaka.
She was unplaced behind Double Form in the King's Stand Stakes at Royal Ascot and then ran fourth behind Thatching, Vaigly Great and Greenland Park in the July Cup.
The International Classification gave her a rating of 80, making her the fifth-best filly trained in Britain behind Connaught Bridge, One in a Million, Greenland Park and Topsy.