|Occupation||Assistant at Leila's Milkbar|
|World of Origin||Ichi No Kuni|
|English voice actor||Lauren Mote|
Myrtle Cartwright (シェリー Shelly) is a girl in Motorville and is commonly called "Starey-Mary" (窓女 window-woman) by "everyone". Her soulmate is Esther and her mother is Betty Cartwright. To unlock her soulmate as an ally for Oliver (and to progress in the storyline), Oliver must solve Myrtle's problem, which happens once he reaches Al Mamoon for the first time.
|This section contains plot details, which may spoil your gameplay.|
Oliver travels to Al Mamoon to talk to Rashaad, who says that he gave up magic because Shadar made Esther brokenhearted.
Oliver and Mr. Drippy travel to Oliver's world and find Esther's soulmate, named Myrtle. Her house is to the bottom-right of the shopping street in town. While trying to enter, a fat old woman passes by and gives some town gossip to Oliver, saying that her family has had problems lately. Oliver uses Spring Lock to open her house door, she is inside and says she is ill and can't leave the house or her dad will get mad. Oliver goes to her dad's workshop to talk to him.
The father goes home and apologizes to his daughter--prompting the scene in which Myrtle steps outside for the first time. Oliver uses Take Heart after this scene to get Myrtle's courage, then travels back to the other world, where he fixes Esther's heart with it. Afterwards as thanks, Rashaad takes Oliver to the Temple of Trials.
Afterwards, she's seen working at Leila's Milkbar.
Later in the game, she introduces Oliver to Danny, the soulmate of Tengri the dragon.
Myrtle, like her soulmate, is a happy-sort of girl who would do anything to help people. The only issue is that she tends to be forgetful once she starts helping (as noted by Swaine), such as when she helps Oliver locate Denny (her neighbor) but then forgets to care for Leila's Milk Bar.
In the Japanese NDS game, she's seen as a little moody/snappy and depressed because she's always been locked inside her house. She gets better after she can go outside.
Myrtle is about Oliver's age (perhaps a year or two older),has long, dullish, lemon-yellow hair that flows freely, and blue eyes (like Oliver). She wears a blue dress, white socks, and green slippers.
- Myrtle became the "Dairy Fairy" after helping Miss Lelia at the shop.
- She can faintly hear when people from the other world are talking, such as Drippy (i.e. when she's prompted to talk about her original nickname when Mr. Drippy mentions "Starey-Mary").