"I am the daughter of a man who was shot by someone who got his inspiration from a movie," the post by Patti Davis begins, referring to the 1981 assassination attempt on Reagan by John Hinckley Jr.
Trump made the controversial remarks at a campaign stop on Tuesday. "Hillary [Clinton] wants to abolish, essentially abolish the Second Amendment," he said to a crowd of supporters in the Trask Coliseum at North Carolina University in Wilmington. "If she gets to pick her judges, nothing you can do, folks.
"Although the Second Amendment people, maybe there is. I don't know," he added.
Trump has since come under fire from critics who say that the remarks encouraged violence.
In the Facebook post, Davis, the eldest child of Ronald and Nancy Reagan, echoed this line of criticism, invoking her family's experience with the 1981 shooting, which wounded the president and three others in Washington, D.C.
"Your glib and horrifying comment about 'Second Amendment people' was heard around the world," the post reads. "It was heard by sane and decent people who shudder at your fondness for verbal violence. It was heard by your supporters, many of whom gleefully and angrily yell, "Lock her up!" at your rallies. It was heard by the person sitting alone in a room, locked in his own dark fantasies, who sees unbridled violence as a way to make his mark in the world, and is just looking for ideas."
A federal judge ordered Hinckley to be released last month, after he spent 35 years in a psychiatric hospital for the assassination attempt.