He'll say that he is glad she has found peace in Solvunn again and he hopes people will continue to let her live her life.

After this occurs, (whether it's now or later) he will let her know that it was the creature from the shrines and they re-lit the candles and it appears to be well itself, a sea giant. Since she gave him one of the keys to unlock the shrine, he thinks she should know that particular detail.