The letter may not even be in her hand. It is stylistically and...

The letter may not even be in her hand. It is stylistically and colloquially no different from someone born, bred and schooled in the U.K. - Is this her story? The signature does not match the handwriting either - no flourishes in the letter, but only in the signature. My limited and only piqued by curiosity experience with handwriting analysis: always shows someone with a flourish for a signature to also use some flourishes in long-hand.

I still believe the Russians were not involved in this act, had they performed this act, the victims would not be alive to tell the story.

Some bungled attempt by another agency did this to them IMO only, of course.

Taurisk