Anya is composing a message that includes information regarding the nature of her relationship with a former employee. What type of message is she writing?

Answer: Responding to Request for recommendation

Explanation:

Recommendation request is an official document in details about someone who is supposed to be worthy fit for a particular job position. This letter describes abilities, working and suggestion of a person who can be considered deserving for the position.

According to the question, Anya is replying to request for recommendation for the previous employee. Response would contain description of behavior, relationship and details about the former employee to recommend him/her for another job.