She's extremely talented and has a massive list of credits, but there is that controversy regarding who actually played bass on many of those original Motown songs. Carol says it was her, but many others, mostly the folks affiliated with the Detroit-located Motown studio, say it was James Jamerson. Carol was based at the then-new L.A.-located Motown studio and likely played on remixes and alternative versions, if any Motown songs at all.
She's a salty one and has drummed up other controversies regarding the Wrecking Crew and more. A friend of mine took a few lessons with her years ago and he said that you had to watch everything you said because she was easily triggered.