I think I found what Emil wrote in his letter to Frey
''Sent from: Lord Emil Maximillian Istvan Llewelyn Von Ansager, Guardian of Cainhurst, Protector of Cainhurst, Knight of Ravenrook, Captain of the King's Navy, Lieutenant of the King's Army, Paladin of the Crown, Agent of C.R.I.E.S., et cetera.
and
Selenia, Lieutenant of the King's Army, Agent of C.R.I.E.S., et cetera.
We, with great joy, want to ask to Mr. Frey of the Eagle's Shadow to let us and our companion join the crew of thy vessel, as we found great pleasure with our stay.
Also, methinks we are worthy companions for thy expedition, as our enemies are in common and many a nuisance they had caused to us all.
We recognize our first appearence might have caused quite the ruckus for a while.
Lord Ansager's presence might also have caused some problems.
He whishes to make ammend to his appearing and behaviour a la wild card.
Miss. Selenia humbly asks to be accepted as a gunner among the Eagle's crew, she believes that her natural ability to use well a gun and keep it functioning are to be respected as also her aim is as fine as her face.
Lord Von Ansager formally requests to be part of the Eagle's flight wing, if not as a pilot, at least as a backup one.
Also he asks to be welcomed among the crewmen as a cook and armsman too, as his cooking skills are as good as his prowess in fighting.
Also, we, with utmost sorrow, grieve on the losses the ship has suffered, and as such we are willing to spare some of our fortune to the cause, to help get the ship ready, the planes in the air, the food on the tables and the men at work.
The Baronies send their regards.''
There was also a raven sigil on the letter, apparently.