A woman from North Yorkshire fears she won't see her mother alive again, because she can't renew her passport.
Tatiana, who's from Harrogate, became a British citizen 10 years ago and still holds Russian Citizenship, but her Russian documents are in her maiden name.
British authorities say all of her documents must be in one name and won't issue her a new passport.
It means if she travels to visit her mother, who has terminal brain cancer, she wouldn't automatically be allowed to return.
Tatiana says she fears she's seen her mother for the last time: