Nothing is known of her early life as of now as she has never been a subject of such focus. She first assisted Phineas and Ferb filming their movie, The Curse of the Princess Monster starring Candace. (“Lights, Candace, Action!”) With Holly, Milly, and Katie, She later helped Phineas and Ferb create an artificial winter in their backyard. (“S’Winter”)
She also helped translate animal dialogue with Phineas and Ferb’s animal translator. (“Interview With a Platypus”) Ginger attempted to contribute to the fundraiser intending to save the star-nosed mole by pet-sitting, but was severely mauled by a cat. (“At the Car Wash”) Along with Isabella and Holly, she was employed at Phineas and Ferb’s backyard spa, walking on backs as a form of massage and doing salt-scrubs. (“Spa Day”)
She attempted to use the computer with permission from her mom but was obviously unable to since Stacy was using the computer to help Candace impress Jeremy. (“For Your Ice Only”) She won a lot of trophies, and Stacy hasn't, but the she revealed that she got all those trophies to impress her sister. ("One Good Turn")
In "Bee Day", she talked to Baljeet about bees, and Baljeet told her about a move, of which she did (and sang) in the next episode.
Ginger is a light brown-skinned girl with straight jet-black hair and brown almond-shaped eyes. Her uniform has a red turtleneck collar and cuffs, and canvas shoes with a dark red line pattern. In winter, she switches to a light yellow sweater with a Christmas tree on it, has leggings with her skirt, long red boots with white laces, and has a brown hairband with red bow on her head.
Ginger has a crush on Baljeet, similar to Isabella having a crush on Phineas. She expressed this interest many times when the Fireside Girls looked for the maracanut tree; however, no one else seems to understand her crush, unlike Isabella’s. In fact, the other girls have revoked her “I Just Saw a Cute Boy” patch twice merely for claiming Baljeet was cute (“Isabella and the Temple of Sap”).
Later, when Baljeet is talking to Ginger about the bees’ “waggle dance”, he is seen possibly developing a crush on her because when Phineas asks him for help he says “In a minute!” However, Ginger is turned into a bee and Baljeet is left alone yet again. (“Bee Day”) Ginger later uses the information Baljeet gave her and helps the other girls get their Beekeeping Patch by explaining how to communicate with bees via the song Waggle Dance. (“Bee Story”) Ginger and Baljeet are also seen dancing together several times ("Happy New Year!" and "Druselsteinoween"). Ten years later, the two have become a couple ("Act Your Age").
It is unclear what Ginger and her older sister Stacy think of each other as most of their interaction is when Phineas and Ferb are doing one of their Big Ideas. In “For Your Ice Only”, she wanted to go on the computer with permission from their mother, saying it was her turn to go onto the computer, but was unlikely able to, as Stacy was trying to help Candace learn hockey terms while trying to bust Phineas and the others at the hockey rink. However in "One Good Turn", it is revealed Ginger got all those trophies because she looks up to Stacy and wanted to impress her.
Ginger had no speaking lines in the movie, but was seen most often during the Robot Riot scene of the movie. She later got her memory wiped out after Isabella had kissed Phineas. She also had a second Dimension of herself seen, but also never spoke in the film.
She bears a striking resemblance to Candace’s best friend, Stacy Hirano, which had led to some speculation that she is Stacy’s little sister, though this could have been a simple coincidence. On May 31, 2012, Swampy confirmed that Stacy is her older sister. And in the episode “For Your Ice Only”, it is shown they are sisters. 
She and Katie appeared in “Rollercoaster” during the grand opening of Phineas and Ferb’s rollercoaster, though they weren’t wearing their berets or sashes.
Despite having a crush on Baljeet, Ginger showed no jealousy towards Mishti in “That Sinking Feeling.” A possible reason is she had no interest in Baljeet at the time. A more likely reason is that Ginger was not seen near Baljeet or Mishti during the episode.