The 77-year-old Markle was taken to a hospital in Chula Vista, California.
Thomas Markle On Hearing Meghan Markle Speak For The First Time In Four Years
The Duchess of Sussex won the latest stage in her long-running privacy lawsuit against the publisher of the Mail on Sunday and the MailOnline website.
The Duchess of Sussex said she had not believed that her father “would sell or leak the letter, primarily because it would not put him in a good light.”
Associated Newspapers is fighting back against Meghan Markle, who sued it for invasion of privacy and copyright infringement over five Feb. 2019 articles.
Thomas Markle told Australia's "60 Minutes" he wants to reconcile with his daughter and Prince Harry, and doesn't understand why they're so "cold."
"I’m just trying to decide if I’m comfortable even talking about that," the Duchess of Sussex told Oprah.
The judge ruled in the Duchess of Sussex's favor without holding a trial, saying the articles were a clear breach of privacy.
The Duchess of Sussex has won her privacy case against Associated Newspapers.
Meghan's lawyer said the Duchess of Sussex's letter, sent in August 2018, was "a message of peace" intended for her father alone.