There is this: British citizenship by adoption
A child adopted by a British citizen only acquires British citizenship automatically if:
the adoption order is made by a court in the United Kingdom, Channel Islands, Isle of Man or Falkland Islands on or after 1 January 1983, or in another British Overseas Territory on or after 21 May 2002; or
it is a Convention adoption under the 1993 Hague Convention on Intercountry Adoption effected on or after 1 June 2003 and the adopters are habitually resident in the United Kingdom on that date.
In both cases, at least one adoptive parent must be a British citizen on the date of the adoption. The requirements are different for persons adopted before 1983.
In all other cases, an application for registration of the child as a British citizen must be made before the child is age 18. Usually this is granted provided the Secretary of State accepts the adoption is bona fide and the child would have been a British citizen if the natural child of the adopters. Usually the adoption must have taken place under the law of a 'designated country' (most developed nations along with some others are 'designated' for this purpose) and be recognised in the UK. This is the standard method for children adopted by British citizens permanently resident overseas to acquire British citizenship.
The cancellation or annulment of an adoption order does not cause loss of British citizenship acquired by that adoption.
British children adopted by non-British nationals do not lose British nationality, even if they acquire a foreign nationality as a result of the adoption.
British nationality law - Wikipedia, the free encyclopedia
Some might question the legitimacy of a British judge deciding on whether the child of an Italian national should be adopted. It really should have been up to the Italian courts to decide on adoption proceedings.
I nabbed this from another forum but it does bring up the legality of the adoption. Which I suspect is what the woman is upset about, rather than the forced c-section story that all the papers seem to be running with.