Daughter,
You shall sail to Driftmark, when you will be married, inmeditely, to Addam Velaryon. I have to solve a large issue; it's my duty to finish Aemond's menace. I must rid the realm of that dragon and that bastard if we want to have some peace, at last. My last will, if I don't survive the duel, which is likely, is that you marry Ser Addam and bear him a son, a true heir of Velaryon blood, continuing Rhaenys' line. That's something I owe both Corlys and Rhaenys after log years of friendship. I know you aren't satisfied by this marriage, but these are my last wishes, this is a debt I must repay. Once you father a son you may fly away or do as you please, the world is yours to roam freely. I cannot bind you to a men forever, your sister was a sacrifice I was unwilling to do, but my hand was forced.
I loved your mother dearly. She's the woman I've loved most; I miss her laugh, her hair wavering on the wing as we flied all over Essos. How she leaped on the saddle, how she snapped her whip, how she danced and flied. How she lived, fearlessly, bodly. I loved her, and I love you too, Rhaena. You're his living image, my daughter, my blood, my flesh, part of my soul.
You have my blessings, Rhaena.
Daemon.