Queen Elizabeth II wrote to American pen pal for 70years same birthday

Sovereign Elizabeth II's casket is lying in state at Westminster

Lobby in front of her memorial service on Monday

A North Dakota lady wrote to Sovereign Elizabeth II for the beyond 70 years

while having a similar birthday as Her Highness.

Adele Hankey, from Park Stream, North Dakota, said she'll "miss" her friend through

correspondence after the sovereign passed on at 96 years old last week.

The letter trade was "vital" to Adele, her niece Phyllis Hankey told Fox News Advanced.

Sovereign Elizabeth II and her American friend through correspondence

were both brought into the world on April 21, 1926.

In 1953, Hankey originally kept in touch with the sovereign when she was delegated.