Providencia "Provi" Paredes, Jackie's personal assistant, boxed up the pink suit from Dallas after Jackie finally removed it early in the morning of November 23, 1963, and sent it by special courier to Janet Auchincloss. It appears that Jackie never knew what happened to the suit - and never asked.
Via Denise Somers
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Janet Auchincloss, Jackie's mother (left) was determined to get Jackie's pink suit out of the White House quickly. She instructed Jackie's personal assistant "Provi" to box it up and send it to her house as soon as possible (without Jackie's knowledge).
Jackie would not take off the suit until she arrived back at the White House the following morning.