Her dad, Prince Michael, was given a royal title for this reason, but it does not extent any further.
The Letters Patent says the children of the sovereign, and the children of their sons would be given the honour of a title.
Prince Michael is the grandson of King George V and the child of Prince George, Duke of Kent, which meant he was the grandchild of the monarch.
However, according to the ruling, a royal title is not automatically given to any children further down the line.
This meant Gabriella and her older brother, Frederick Windsor, 40, took the titles of Lady and Lord.