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Meghan Markle’s estranged half-sister Samantha Markle is continuing her quest to try and get the royal’s attention.

In her latest controversial public move, 53-year-old Samantha — who appears to havebeen in London since late September— was spotted trying to visit Kensington Palace on Saturday.

Meghan, 37, and husbandPrince Harry, 34, live inNottingham Cottage, a 1,300-square-foot, two-bedroom home in the compound of the palace.

Photos taken from the public outing show Samantha, who has multiple sclerosis, being pushed around in a wheelchair while her companion, a man, hands a letter to a palace guard.

Commenting on the contents of the message, Samantha later tweeted, “Everybody would love to know what’s in that letter,” alongside a variety of emojis, including an angel and a kissy face.

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Samantha — the daughter of Meghan’s father,Thomas Markle, from his first marriage — has been outspoken since Meghan first stepped onto the royal stage. Neither Samantha nor Thomas, 74,attended Meghan’s wedding in May.

In addition to telling the press that she was writing a memoir titled The Diary of Princess Pushy’s Sister, Samantha later took responsibility for arranging Thomas’staged paparazzi photosin the weeks leading up to the royal wedding — about whichThomas admitted he lied to Harry.

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Samantha went on to confess that she had been “cashing in” on Meghan’s fame.

“Let’s face it — we all have to survive. Money makes the world go round, so if you want to call that cashing in, that’s fine, but I think no one in media would refuse a paycheck for talking about the royal and, as a family, we’re not subject to royal protocol,” she toldGood Morning Britainin July.

Addressing Meghan and Samantha’s relationship, a source close to the formerSuitsstar previously told PEOPLE that “Meghan has no relationship with her half-siblings, nor has she ever had one.”

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Since the wedding, Samantha has amped up her public criticism of Meghan.

“How about you pay tribute to your own father?!” Samantha wrote on Twitter in July, according toPage Six. “Enough is enough. Act like a humanitarian, act like a woman. If our father dies, it’s on you Meg!”

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Meanwhile, Thomas has spoken at length about his frustration over thelack of contacthe’s had with her, givingmultiple explosive interviews.

“It was very wearing on” Meghan, an insider recently told PEOPLE in September, four months after she married Harry. “It’s her private life.”

source: people.com