It's the arty, chic older sister of the eponymous cartoon everyperson Doug, Judy Funnie. Trained on 40 cropped and upscaled screengrabs, half from the original Nickelodeon series, and half from the Disney/ABC series (removed in 2.0, see notes).
0.6 - 0.8 weight plays nicest
helper tags: red hair, slender, purple beret, sunglasses (technically, these are part of her outfit, but she's rarely seen without either)
her original appearance has straight bangs, shaved sides
her later appearance has parted hair/bangs, slim/thin face
outfit:
her original outfit: purple turtleneck dress, black undershirt, black leggings, purple boots
her later outfit: purple blouse, white undershirt, black leggings, sandals