[ He will nod at her words in which she has made an agreement - to ensure that there is no regrets. But, also... ]

...And, I shall have faith that you two will find harmony in the midst of even the most turbulent of storms within each of your worlds.

[ Argenti has a good idea of how fraught both are by now, actually, so he will not say her worries are unfounded. But all the same, he will give his support nonetheless.

He wishes them the utmost happiness, no matter what. ]