• Prince Harry and Meghan Markle have been in contact with Queen Elizabeth after Prince Philip died, a report says
  • Markle reportedly "expressed her condolences" to the Queen, who "understands why she "can't travel at the moment"
  • Markle previously said that the monarch has always been "wonderful" to her

Queen Elizabeth II "understands" why Meghan Markle can’t travel to the U.K. and come to Prince Philip’s funeral, a report says.

Prince Harry arrived in his home country alone Sunday, two days after Buckingham Palace announced that the Duke of Edinburgh had passed away at age 99. Markle, who is heavily pregnant with their second baby, did not join her husband as she was advised against traveling by her doctors.

"It was always a given that Harry would return to England for his grandfather's passing," an unnamed California source told People.

The insider added that both Prince Harry and Markle have been "in contact with the Queen" since the announcement of the death of the monarch's husband of 73 years.

"Meghan expressed condolences. The Queen understands why she can't travel at the moment," the source told the outlet.

Reports said Prince Harry and Markle are being "extra careful" with her pregnancy after she suffered a miscarriage, which she revealed in a heartbreaking personal essay for The New York Times in November last year.

"They’re taking this precaution seriously because she miscarried before," an unnamed insider recently told Us Weekly. "Doctors don’t think the stress of it all is worth her risking losing another baby."

Prince Harry and Markle stepped back as working royals last year and have since settled down in their multimillion-dollar estate in Montecito, California. But they maintained their communications with the Queen as well as Prince Philip, prior to his death.

In Prince Harry and Markle’s CBS sit-down interview with Oprah Winfrey last month, the duchess made several bombshell revelations, including allegations of racism within the royal family and lack of effort in helping her with her mental health struggles. However, Markle made it clear that the Queen had been kind to her after she married into the royal family.

"It's hard for people to distinguish the two because it's a family business, there's the family, and then there are the people that are running the institution, those are two separate things and it's important to be able to compartmentalize that because the Queen, for example, has always been wonderful to me," Markle was quoted by People as telling Winfrey.

Prince Harry is currently quarantining at their Frogmore Cottage home in England and is expected to reunite with the royal family at Prince Philip's funeral Saturday.

Meghan Markle and Queen Elizabeth II
Queen Elizabeth II’s highlights for 2018 includes a snap of Her Majesty and Meghan Markle giggling. Pictured: Markle and Queen Elizabeth II during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Getty Images/Jeff J Mitchell