It was only due to her magnetic powers, and the unsettling affects they had on her mind that the lady who would come to be known as Magenta menaced the Flash.....
....but, it's best to go back to the beginning!
The Possessing Of Francis KaneKid Flash) and fellow Titans Raven and more, they help Frances deal with her emerging magnetics, saving the girl (and their HQ, the Titans Tower, where they brought her to study her) and foiling Dr. Polaris' plans to escape his extra-dimensional prison.
Brotherhood of Evil and moreBrotherhood of Evil. The last issue of this run involves two mutant brothers, Thunder and Lighting, who also suddenly manifest powers (and Frances returns to Blue Valley....with Wally rethinking his life, and then giving up being Kid Flash as of New Teen Titans #39 of February, 1984 by Wolfman/Perez/Tanghal, leaving the Titans and going to Blue Valley with Frances). Frances and Wally return to Titans Tower briefly in Tales of the Teen Titans #45 (August, 1984), and save Aqualad and Aquagirl from H.I.V.E.
Dr. Light and Wedding BellsDr. Light (Arthur Light, a villain who uses light-based weapons against heroes) while Wally finds out that his super-speed is killing him.
Still, the duo show up for Donna (Wonder Girl) Troy's wedding the next issue!
The Menace of Trigon
Small appearances for Frances, but showing a rift forming between her and Wally that even her magnetic powers can't fix.
Flash On His OwnVandal Savage, Frances left Wally after events in Flash #2 (July, 1987).
Sadly, she barely has any speaking lines, and is mostly a victim here, as Deathstroke the Terminator (an early Titans foe) has to work with the Titans to free them from their hidden foe....