Ok, Richard, so your entered UK on Fiancee Visa.
She then married in December and applied for FLR (Further Leave to Remain).
This has been refused.
Did your wife include an English Language Test pass certificate with the application?
The new rules since 29 November state that this is a requirement.

BTW:

Article 8 of the (ECHR) European Convention on Human Rights provides a right to respect for one's "private and family life, his home and his correspondence", subject to certain restrictions that are "in accordance with law" and "necessary in a democratic society".

“ Article 8 – Right to respect for private and family life
1. Everyone has the right to respect for his private and family life, his home and his correspondence.

2. There shall be no interference by a public authority with the exercise of this right except such as is in accordance with the law and is necessary in a democratic society in the interests of national security, public safety or the economic well-being of the country, for the prevention of disorder or crime, for the protection of health or morals, or for the protection of the rights and freedoms of others.

Maybe they are indicating your possible reconsideration or appeal basis?

But Richard, what was the reason for refusal??
Did your wife comply with all requirements? Including English language test.

Time is of the essence now