Actually, she had MORE than a fling with Mr Babbitt! She was married to him!
"Babbitt married Marjorie Celeste Belcher, the later Marge Champion, on August 8, 1937; she was just under 18, and he was 29. They divorced a year or two later. At the time of his marriage, Babbitt was in the midst of animating the Queen 's early scenes in Snow White. The sweatbox notes suggest that his work on those scenes began in early July 1937 and ended in late October; so if Walt Disney was about to fire Babbitt, he would have done so at the cost of disrupting production of his feature. Moreover, there is good reason to believe that Babbitt and Marjorie Belcher married not because they were having an affair, but because they were not having one. This is what Marge Champion told me when I interviewed her in 1993:
Champion: I loved Art very much; he was a terrific guy. We were just totally unsuited to each other.
Barrier: Everybody who has mentioned your marriage has said this, and I've never understood quite what happened between you.
Champion: I never have either, except that for a very brief period, he just swept me off my feet. You know, in those days, nice girls didn't, so that was one way of getting into life."
in
http://www.michaelbarrier.com/Commentary/Gabler/GablerBook.htm