When india achieved independence they deported all of the british that were living there at the time. Some of them had 300 years of history in the country, had been born in india, had never seen the shores of england.
Didnt matter. They still had to go home.
Theres a lesson here.
Ash Sarkar is a British citizen who was born in London to a British citizen as has lived in the UK as a British citizen her entire life. Her family can trace its roots in this country back at least 50 years.
Where are you proposing she is deported to?