Somewhere Rosa Parks is confused. She thought that she was the first woman to lay in state in the rotunda. For that matter, so did most of America with any functioning memory.
I can't speak to Rosa Parks' prior knowledge on the subject, but I'm sure when it was explained to her that "lay in state" is a term used for members of the Government, and "lay in honor" is a term used for prominent private citizens, that she would fully understand the difference.
If she were still confused, I'd direct her to this website, and the below quote:
https://www.aoc.gov/what-we-do/programs-ceremonies/lying-in-state-honor
Lying in State or in HonorThe Rotunda of the U.S. Capitol has been considered the most suitable place for the nation to pay final tribute to its most eminent citizens by having their remains lay in state (in the case of government officials and military officers) or in honor (in the case of private citizens).
Since Justice Ginsburg was an active member of the government when she passed, her remains will lie in state. Ms. Parks was a very important, but a private, citizen when she passed, so her remains laid in honor.
I'm sure Ms. Parks would be able to appreciate the subtle, but substantial difference between the two.