Why launder the suit? It was no accident.
For someone who wants to seem to be neutral you sure make a lot of negative assertions.
The chair with Lincolns "blood stains" that Lincoln was murdered in, is forever on display and even though there appears to be some doubt as to what caused the "blood stains" it still is a macabre way to remember the dead President and perhaps Mrs Connally didn't want her husband and his suit remembered in the centuries to come in some circus sideshow.
Not my arrows, just some photos I found online of where people are pointing out what they believe to be "blood stains".


And on it goes....
A pillow from Willie Clark’s bed at the Petersen House is now a priceless relic. On it, you can see the blood of President Abraham Lincoln.https://www.fords.org/lincolns-assassination/lincolns-pillow/
Mark Knight a devout CT who's an Admin from the Ed Forum shares his opinion.

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It was reported that Robert Kennedy allegedly stole his brothers brain for a similar reason.
Mr Hills comments came as it was reported that JFK’s missing brain was stolen by Robert Kennedy after his assassination to stop it ever going on display, according to secret US government files.https://www.heraldsun.com.au/truecrimeaustralia/jfk-assassination-robert-f-kennedy-took-his-brothers-brain-after-autopsy/news-story/e22123c43934d769aaa439bb0eeea761JohnM