This has effectively been banned in some US States with legislative term limits. So the state legislators never actually learn how to write effective legislation.
If the legislators don't know how laws work, guess who writes the laws?
All it takes is skimming the headlines when you search the news for "Missouri law" and you'll get a good idea of what the end result of this proposal is.
She married her husband a year after they both graduated college. This would have been taken while she was still in college.
Her father was a career politician, and had spent about a decade as Baltimore's mayor before Kennedy's election. That's presumably why she was there.
At any rate, she's never had a career outside politics. She did volunteer work for the Democratic party when she was raising her kids; she first ran for office around the time they were graduating from high school.